Finding the Fourth Proportional to 21,517.89, 29,722.71 and 16,543.27

Step by Step Solution

1. Step 1: Write the proportion equation
   21,517.89 : 29,722.71 = 16,543.27 : x
2. Step 2: Convert to fraction form
   21,517.89/29,722.71 = 16,543.27/x
3. Step 3: Cross multiply
   21,517.89x = 29,722.71 × 16,543.27
4. Step 4: Simplify right side
   21,517.89x = 491,710,816.66
5. Step 5: Solve for x
   x = 491,710,816.66/21,517.89
6. Step 6: Final answer
   x = 22,851.26