Step 1:
The first step to converting 4505.8709990624 to a fraction is to re-write 4505.8709990624 in the form p/q where p and q are both positive integers. To start with, 4505.8709990624 can be written as simply 4505.8709990624/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 4505.8709990624, which in this case is 10. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 4505.8709990624/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 4505.8709990624/1 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 4505.8709990624 as a fraction:
36047/8 / 1