Step 1:
The first step to converting 21050.258490473 to a fraction is to re-write 21050.258490473 in the form p/q where p and q are both positive integers. To start with, 21050.258490473 can be written as simply 21050.258490473/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 21050.258490473, which in this case is 9. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 21050.258490473/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 21050.258490473/1 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 21050.258490473 as a fraction:
84201/4 / 1