Finding the Fourth Proportional to 21,084.17, 29,097.98 and 11,654.55

Step by Step Solution

1. Step 1: Write the proportion equation
   21,084.17 : 29,097.98 = 11,654.55 : x
2. Step 2: Convert to fraction form
   21,084.17/29,097.98 = 11,654.55/x
3. Step 3: Cross multiply
   21,084.17x = 29,097.98 × 11,654.55
4. Step 4: Simplify right side
   21,084.17x = 339,123,804.54
5. Step 5: Solve for x
   x = 339,123,804.54/21,084.17
6. Step 6: Final answer
   x = 16,084.29