Step 1:
The first step to converting 12564367.551871 to a fraction is to re-write 12564367.551871 in the form p/q where p and q are both positive integers. To start with, 12564367.551871 can be written as simply 12564367.551871/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 12564367.551871, which in this case is 6. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 12564367.551871/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 12564367.551871/1 each by 1000000:
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 12564367.551871 as a fraction:
12564367/1 / 1