Finding the Fourth Proportional to 21,517.72, 32,283.86 and 10,992.17

Step by Step Solution

1. Step 1: Write the proportion equation
   21,517.72 : 32,283.86 = 10,992.17 : x
2. Step 2: Convert to fraction form
   21,517.72/32,283.86 = 10,992.17/x
3. Step 3: Cross multiply
   21,517.72x = 32,283.86 × 10,992.17
4. Step 4: Simplify right side
   21,517.72x = 354,869,704.86
5. Step 5: Solve for x
   x = 354,869,704.86/21,517.72
6. Step 6: Final answer
   x = 16,491.98