numeral
fourth
A1
vierte is the ordinal form meaning fourth. It inflects for gender, number and case (vierter, vierter, viertes, etc.) and is used attributively or predicatively; with dates you say am vierten (dative). Can function as a noun (der Vierte) meaning the fourth person.
Examples
Die vierte Etage blieb geschlossen, weil ein Aufzug repariert werden musste.
The fourth floor remained closed because an elevator had to be repaired.
Er ist der vierte in der Reihe.
He is the fourth in line.
Details
Mnemonics
four segments with the fourth highlighted
sounds like 'veer-te' — think of a quarter of a circle (a fourth)