Finding the Fourth Proportional to 21,517.47, 32,059.94 and 20,308.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,517.47 : 32,059.94 = 20,308.86 : x
2. Step 2: Convert to fraction form
   21,517.47/32,059.94 = 20,308.86/x
3. Step 3: Cross multiply
   21,517.47x = 32,059.94 × 20,308.86
4. Step 4: Simplify right side
   21,517.47x = 651,100,731.52
5. Step 5: Solve for x
   x = 651,100,731.52/21,517.47
6. Step 6: Final answer
   x = 30,259.17