Step 1:
The first step to converting 3555220.7205478 to a fraction is to re-write 3555220.7205478 in the form p/q where p and q are both positive integers. To start with, 3555220.7205478 can be written as simply 3555220.7205478/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 3555220.7205478, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 3555220.7205478/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 3555220.7205478/1 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 3555220.7205478 as a fraction:
3555220/1 / 1