Finding the Fourth Proportional to 21,522.25, 29,699.89 and 11,962.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,522.25 : 29,699.89 = 11,962.72 : x
2. Step 2: Convert to fraction form
   21,522.25/29,699.89 = 11,962.72/x
3. Step 3: Cross multiply
   21,522.25x = 29,699.89 × 11,962.72
4. Step 4: Simplify right side
   21,522.25x = 355,291,468.10
5. Step 5: Solve for x
   x = 355,291,468.10/21,522.25
6. Step 6: Final answer
   x = 16,508.10