Finding the Fourth Proportional to 8,150.32, 12,115.58 and 7,910.87

Step by Step Solution

1. Step 1: Write the proportion equation
   8,150.32 : 12,115.58 = 7,910.87 : x
2. Step 2: Convert to fraction form
   8,150.32/12,115.58 = 7,910.87/x
3. Step 3: Cross multiply
   8,150.32x = 12,115.58 × 7,910.87
4. Step 4: Simplify right side
   8,150.32x = 95,844,678.22
5. Step 5: Solve for x
   x = 95,844,678.22/8,150.32
6. Step 6: Final answer
   x = 11,759.62