Step 1:
The first step to converting 19490.6393945 to a fraction is to re-write 19490.6393945 in the form p/q where p and q are both positive integers. To start with, 19490.6393945 can be written as simply 19490.6393945/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 19490.6393945, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 19490.6393945/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 19490.6393945/1 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 19490.6393945 as a fraction:
214397/11 / 1