Step 1:
The first step to converting 15665.74726564 to a fraction is to re-write 15665.74726564 in the form p/q where p and q are both positive integers. To start with, 15665.74726564 can be written as simply 15665.74726564/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 15665.74726564, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 15665.74726564/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 15665.74726564/1 each by 100000000:
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 15665.74726564 as a fraction:
62663/4 / 1