Finding the Fourth Proportional to 10,385.80, 14,332.50 and 5,670.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,385.80 : 14,332.50 = 5,670.28 : x
2. Step 2: Convert to fraction form
   10,385.80/14,332.50 = 5,670.28/x
3. Step 3: Cross multiply
   10,385.80x = 14,332.50 × 5,670.28
4. Step 4: Simplify right side
   10,385.80x = 81,269,288.10
5. Step 5: Solve for x
   x = 81,269,288.10/10,385.80
6. Step 6: Final answer
   x = 7,825.04