Finding the Fourth Proportional to 10,539, 15,800.28 and 5,276.10

Step by Step Solution

1. Step 1: Write the proportion equation
   10,539 : 15,800.28 = 5,276.10 : x
2. Step 2: Convert to fraction form
   10,539/15,800.28 = 5,276.10/x
3. Step 3: Cross multiply
   10,539x = 15,800.28 × 5,276.10
4. Step 4: Simplify right side
   10,539x = 83,363,857.31
5. Step 5: Solve for x
   x = 83,363,857.31/10,539
6. Step 6: Final answer
   x = 7,910.03