Finding the Fourth Proportional to 21,095.98, 29,113.46 and 11,665.15

Step by Step Solution

1. Step 1: Write the proportion equation
   21,095.98 : 29,113.46 = 11,665.15 : x
2. Step 2: Convert to fraction form
   21,095.98/29,113.46 = 11,665.15/x
3. Step 3: Cross multiply
   21,095.98x = 29,113.46 × 11,665.15
4. Step 4: Simplify right side
   21,095.98x = 339,612,790.55
5. Step 5: Solve for x
   x = 339,612,790.55/21,095.98
6. Step 6: Final answer
   x = 16,098.46