Finding the Fourth Proportional to 8,116.92, 12,150.54 and 5,198.04

Step by Step Solution

1. Step 1: Write the proportion equation
   8,116.92 : 12,150.54 = 5,198.04 : x
2. Step 2: Convert to fraction form
   8,116.92/12,150.54 = 5,198.04/x
3. Step 3: Cross multiply
   8,116.92x = 12,150.54 × 5,198.04
4. Step 4: Simplify right side
   8,116.92x = 63,158,992.94
5. Step 5: Solve for x
   x = 63,158,992.94/8,116.92
6. Step 6: Final answer
   x = 7,781.15