Finding the Fourth Proportional to 8,109.52, 12,167.64 and 2,915.92

Step by Step Solution

1. Step 1: Write the proportion equation
   8,109.52 : 12,167.64 = 2,915.92 : x
2. Step 2: Convert to fraction form
   8,109.52/12,167.64 = 2,915.92/x
3. Step 3: Cross multiply
   8,109.52x = 12,167.64 × 2,915.92
4. Step 4: Simplify right side
   8,109.52x = 35,479,864.83
5. Step 5: Solve for x
   x = 35,479,864.83/8,109.52
6. Step 6: Final answer
   x = 4,375.09