Step 1:
The first step to converting 4359.398875642 to a fraction is to re-write 4359.398875642 in the form p/q where p and q are both positive integers. To start with, 4359.398875642 can be written as simply 4359.398875642/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 4359.398875642, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 4359.398875642/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 4359.398875642/1 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 4359.398875642 as a fraction:
21797/5 / 1