Step 1:
The first step to converting 18369.566519803 to a fraction is to re-write 18369.566519803 in the form p/q where p and q are both positive integers. To start with, 18369.566519803 can be written as simply 18369.566519803/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 18369.566519803, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 18369.566519803/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 18369.566519803/1 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 18369.566519803 as a fraction:
128587/7 / 1