Definition of 4th:

• coming next after the third and just before the fifth in position or time or degree or magnitude; " the quaternary period of geologic time extends from the end of the tertiary period to the present"

Usage examples for 4th

1. On the morning of the 4th of September, 1864, the end came.  Raiding with Morgan by Byron A. Dunn

2. Written 1903. 4. Performed 4th.  John M. Synge: A Few Personal Recollections, with Biographical Notes by John Masefield

3. The affair started on the evening of December 4th; the reformers remained in the palace until the afternoon of December 7th.  Korea's Fight for Freedom by F.A. McKenzie

4. Cutting begins about the 4th of June, and this year they were cutting still on the 19th of October.  Northern California, Oregon, and the Sandwich Islands by Charles Nordhoff

5. On the 4th of November independence was proclaimed.  The Path of Empire A Chronicle of the United States as a World Power, Volume 46 in The Chronicles of America Series by Carl Russell Fish