Step 1:
The first step to converting 11658.276880689 to a fraction is to re-write 11658.276880689 in the form p/q where p and q are both positive integers. To start with, 11658.276880689 can be written as simply 11658.276880689/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 11658.276880689, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 11658.276880689/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 11658.276880689/1 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 11658.276880689 as a fraction:
81608/7 / 1