Finding the Fourth Proportional to 10,340.92, 15,498.42 and 5,148.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,340.92 : 15,498.42 = 5,148.28 : x
2. Step 2: Convert to fraction form
   10,340.92/15,498.42 = 5,148.28/x
3. Step 3: Cross multiply
   10,340.92x = 15,498.42 × 5,148.28
4. Step 4: Simplify right side
   10,340.92x = 79,790,205.72
5. Step 5: Solve for x
   x = 79,790,205.72/10,340.92
6. Step 6: Final answer
   x = 7,715.97