Step 1:
The first step to converting 11668.720645904 to a fraction is to re-write 11668.720645904 in the form p/q where p and q are both positive integers. To start with, 11668.720645904 can be written as simply 11668.720645904/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 11668.720645904, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 11668.720645904/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 11668.720645904/1 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 11668.720645904 as a fraction:
81681/7 / 1