So as you can tell the order is: 12/11, 12/6, 12/4
The least common denominator (LCD) is: 132.
Rewriting as equivalent fractions with the LCD:
396/132, 264/132, 144/132
Ordering these fractions by the numerator:
144/132 < 264/132 < 396/132
Therefore, the order of your input is:
12/11 < 12/6 < 12/4