Finding the Fourth Proportional to 21,085.14, 29,097.72 and 11,654.04

Step by Step Solution

1. Step 1: Write the proportion equation
   21,085.14 : 29,097.72 = 11,654.04 : x
2. Step 2: Convert to fraction form
   21,085.14/29,097.72 = 11,654.04/x
3. Step 3: Cross multiply
   21,085.14x = 29,097.72 × 11,654.04
4. Step 4: Simplify right side
   21,085.14x = 339,105,992.79
5. Step 5: Solve for x
   x = 339,105,992.79/21,085.14
6. Step 6: Final answer
   x = 16,082.70