Finding the Fourth Proportional to 10,432.20, 14,395.86 and 5,715.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,432.20 : 14,395.86 = 5,715.54 : x
2. Step 2: Convert to fraction form
   10,432.20/14,395.86 = 5,715.54/x
3. Step 3: Cross multiply
   10,432.20x = 14,395.86 × 5,715.54
4. Step 4: Simplify right side
   10,432.20x = 82,280,113.66
5. Step 5: Solve for x
   x = 82,280,113.66/10,432.20
6. Step 6: Final answer
   x = 7,887.13