Step 1:
The first step to converting 16331.78821092 to a fraction is to re-write 16331.78821092 in the form p/q where p and q are both positive integers. To start with, 16331.78821092 can be written as simply 16331.78821092/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 16331.78821092, which in this case is 8. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 16331.78821092/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 16331.78821092/1 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 16331.78821092 as a fraction:
81659/5 / 1