Rewriting as fractions if necessary:
-9/2, -1/2, 1/4, 2/3, 7/3
The least common denominator (LCD) is: 12.
Rewriting as equivalent fractions with the LCD:
-54/12, -6/12, 3/12, 8/12, 28/12
Ordering these fractions by the numerator in order from least to greatest:
-54/12 < -6/12 < 3/12 < 8/12 < 28/12
Therefore, your input in order from least to greatest is:
-4 1/2 < -1/2 < 1/4 < 2/3 < 2 1/3