I'll be flying in on the 'fourth'. [=the fourth day of the month]
He got a base hit in the 'fourth'. [=the fourth inning]
She drank a 'fourth' of the bottle.
(..) They could have put it inside him. Do you know what that means? Leo the Fart will pass gas one more time. Mr. Torelli. I hope it is all right I am here. I do not want to be a fourth wheel. Fifth wheel. Did you hear that, Benedict? Family. Go pay your respects. Let us say this is a movie. (..)1993 Last Action Hero