Finding the Fourth Proportional to 10,200.24, 15,300.44 and 5,580.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,200.24 : 15,300.44 = 5,580.72 : x
2. Step 2: Convert to fraction form
   10,200.24/15,300.44 = 5,580.72/x
3. Step 3: Cross multiply
   10,200.24x = 15,300.44 × 5,580.72
4. Step 4: Simplify right side
   10,200.24x = 85,387,471.52
5. Step 5: Solve for x
   x = 85,387,471.52/10,200.24
6. Step 6: Final answer
   x = 8,371.12