Finding the Fourth Proportional to 21,662.10, 29,893.34 and 12,102.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,662.10 : 29,893.34 = 12,102.16 : x
2. Step 2: Convert to fraction form
   21,662.10/29,893.34 = 12,102.16/x
3. Step 3: Cross multiply
   21,662.10x = 29,893.34 × 12,102.16
4. Step 4: Simplify right side
   21,662.10x = 361,773,983.61
5. Step 5: Solve for x
   x = 361,773,983.61/21,662.10
6. Step 6: Final answer
   x = 16,700.78