Finding the Fourth Proportional to 21,086.69, 29,100.24 and 11,527.10

Step by Step Solution

1. Step 1: Write the proportion equation
   21,086.69 : 29,100.24 = 11,527.10 : x
2. Step 2: Convert to fraction form
   21,086.69/29,100.24 = 11,527.10/x
3. Step 3: Cross multiply
   21,086.69x = 29,100.24 × 11,527.10
4. Step 4: Simplify right side
   21,086.69x = 335,441,376.50
5. Step 5: Solve for x
   x = 335,441,376.50/21,086.69
6. Step 6: Final answer
   x = 15,907.73