Step 1:
The first step to converting 15279.916988643 to a fraction is to re-write 15279.916988643 in the form p/q where p and q are both positive integers. To start with, 15279.916988643 can be written as simply 15279.916988643/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 15279.916988643, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 15279.916988643/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 15279.916988643/1 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 15279.916988643 as a fraction:
183359/12 / 1