Finding the Fourth Proportional to 21,097.46, 29,112.54 and 11,665.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,097.46 : 29,112.54 = 11,665.82 : x
2. Step 2: Convert to fraction form
   21,097.46/29,112.54 = 11,665.82/x
3. Step 3: Cross multiply
   21,097.46x = 29,112.54 × 11,665.82
4. Step 4: Simplify right side
   21,097.46x = 339,621,651.38
5. Step 5: Solve for x
   x = 339,621,651.38/21,097.46
6. Step 6: Final answer
   x = 16,097.75