Finding the Fourth Proportional to 21,096.62, 29,112.50 and 11,665.18

Step by Step Solution

1. Step 1: Write the proportion equation
   21,096.62 : 29,112.50 = 11,665.18 : x
2. Step 2: Convert to fraction form
   21,096.62/29,112.50 = 11,665.18/x
3. Step 3: Cross multiply
   21,096.62x = 29,112.50 × 11,665.18
4. Step 4: Simplify right side
   21,096.62x = 339,602,552.75
5. Step 5: Solve for x
   x = 339,602,552.75/21,096.62
6. Step 6: Final answer
   x = 16,097.49