Always start from the first number and work your way in. All these numbers have a 9, so we move to the next number . The first high number is a 7, so we know our first number will be a 9.7. All of the other 3 numbers have a two after the 9, therefore the second highest numbers are between 9.2731 and 9.27. The next highest number is 9.2731 because 3 is bigger than 0. (Place a zero after the 7 to compare)
Lastly compare 9.27(0) and 9.207 .
7 is bigger than 0, therefore in order:
9.7,
9.2731,
9.27,
9.207
Let me know if you don't understand something!