Finding the Fourth Proportional to 22,728.08, 34,086.72 and 10,240.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.08 : 34,086.72 = 10,240.40 : x
2. Step 2: Convert to fraction form
   22,728.08/34,086.72 = 10,240.40/x
3. Step 3: Cross multiply
   22,728.08x = 34,086.72 × 10,240.40
4. Step 4: Simplify right side
   22,728.08x = 349,061,647.49
5. Step 5: Solve for x
   x = 349,061,647.49/22,728.08
6. Step 6: Final answer
   x = 15,358.17