Finding the Fourth Proportional to 21,143.52, 29,111.61 and 17,950.19

Step by Step Solution

1. Step 1: Write the proportion equation
   21,143.52 : 29,111.61 = 17,950.19 : x
2. Step 2: Convert to fraction form
   21,143.52/29,111.61 = 17,950.19/x
3. Step 3: Cross multiply
   21,143.52x = 29,111.61 × 17,950.19
4. Step 4: Simplify right side
   21,143.52x = 522,558,785.15
5. Step 5: Solve for x
   x = 522,558,785.15/21,143.52
6. Step 6: Final answer
   x = 24,714.84