Step 1:
The first step to converting 4398.1579880729 to a fraction is to re-write 4398.1579880729 in the form p/q where p and q are both positive integers. To start with, 4398.1579880729 can be written as simply 4398.1579880729/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 4398.1579880729, which in this case is 10. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 4398.1579880729/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 4398.1579880729/1 each by 10000000000:
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 4398.1579880729 as a fraction:
83565/19 / 1