Finding the Fourth Proportional to 35,727.88, 53,513.82 and 17,221

Step by Step Solution

1. Step 1: Write the proportion equation
   35,727.88 : 53,513.82 = 17,221 : x
2. Step 2: Convert to fraction form
   35,727.88/53,513.82 = 17,221/x
3. Step 3: Cross multiply
   35,727.88x = 53,513.82 × 17,221
4. Step 4: Simplify right side
   35,727.88x = 921,561,494.22
5. Step 5: Solve for x
   x = 921,561,494.22/35,727.88
6. Step 6: Final answer
   x = 25,793.90