Step 1:
The first step to converting 11571.931120438 to a fraction is to re-write 11571.931120438 in the form p/q where p and q are both positive integers. To start with, 11571.931120438 can be written as simply 11571.931120438/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 11571.931120438, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 11571.931120438/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 11571.931120438/1 each by 1000000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 11571.931120438 as a fraction:
162007/14 / 1