Finding the Fourth Proportional to 21,393.42, 29,522.42 and 11,962.86

Step by Step Solution

1. Step 1: Write the proportion equation
   21,393.42 : 29,522.42 = 11,962.86 : x
2. Step 2: Convert to fraction form
   21,393.42/29,522.42 = 11,962.86/x
3. Step 3: Cross multiply
   21,393.42x = 29,522.42 × 11,962.86
4. Step 4: Simplify right side
   21,393.42x = 353,172,577.32
5. Step 5: Solve for x
   x = 353,172,577.32/21,393.42
6. Step 6: Final answer
   x = 16,508.47