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.
(..) Not if you don't leave. I have no choice. The Mind Stone is the fourth of the Infinity Stones to show up in the last few years. That's not a coincidence. Someone has been playing an intricate game and has made pawns of us. - Once all these pieces are in position... - Triple Yahtzee? I do. (..)2015 Avengers: Age of Ultron