Finding the Fourth Proportional to 8,108.87, 12,166.52 and 2,915.15

Step by Step Solution

1. Step 1: Write the proportion equation
   8,108.87 : 12,166.52 = 2,915.15 : x
2. Step 2: Convert to fraction form
   8,108.87/12,166.52 = 2,915.15/x
3. Step 3: Cross multiply
   8,108.87x = 12,166.52 × 2,915.15
4. Step 4: Simplify right side
   8,108.87x = 35,467,155.37
5. Step 5: Solve for x
   x = 35,467,155.37/8,108.87
6. Step 6: Final answer
   x = 4,373.87