'Fourth' in the Bible

Then there will be a fourth kingdom as strong as iron; inasmuch as iron crushes and shatters all things, so, like iron that breaks in pieces, it will crush and break all these in pieces.

He said, “Look! I see four men loosed and walking about in the midst of the fire without harm, and the appearance of the fourth is like a son of the gods!”

After this I kept looking in the night visions, and behold, a fourth beast, dreadful and terrifying and extremely strong; and it had large iron teeth. It devoured and crushed and trampled down the remainder with its feet; and it was different from all the beasts that were before it, and it had ten horns.

“Then I desired to know the exact meaning of the fourth beast, which was different from all the others, exceedingly dreadful, with its teeth of iron and its claws of bronze, and which devoured, crushed and trampled down the remainder with its feet,

“Thus he said: ‘The fourth beast will be a fourth kingdom on the earth, which will be different from all the other kingdoms and will devour the whole earth and tread it down and crush it.

And now I will tell you the truth. Behold, three more kings are going to arise in Persia. Then a fourth will gain far more riches than all of them; as soon as he becomes strong through his riches, he will arouse the whole empire against the realm of Greece.