Finding the Fourth Proportional to 21,171.32, 29,216.72 and 11,612.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,171.32 : 29,216.72 = 11,612.04 : x
2. Step 2: Convert to fraction form
   21,171.32/29,216.72 = 11,612.04/x
3. Step 3: Cross multiply
   21,171.32x = 29,216.72 × 11,612.04
4. Step 4: Simplify right side
   21,171.32x = 339,265,721.31
5. Step 5: Solve for x
   x = 339,265,721.31/21,171.32
6. Step 6: Final answer
   x = 16,024.78