Finding the Fourth Proportional to 10,150.57, 15,233.55 and 4,311.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,150.57 : 15,233.55 = 4,311.28 : x
2. Step 2: Convert to fraction form
   10,150.57/15,233.55 = 4,311.28/x
3. Step 3: Cross multiply
   10,150.57x = 15,233.55 × 4,311.28
4. Step 4: Simplify right side
   10,150.57x = 65,676,099.44
5. Step 5: Solve for x
   x = 65,676,099.44/10,150.57
6. Step 6: Final answer
   x = 6,470.19