Step 1:
The first step to converting 5638518.4361978 to a fraction is to re-write 5638518.4361978 in the form p/q where p and q are both positive integers. To start with, 5638518.4361978 can be written as simply 5638518.4361978/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 5638518.4361978, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 5638518.4361978/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 5638518.4361978/1 each by 10000000:
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 5638518.4361978 as a fraction:
5638518/1 / 1