Finding the Fourth Proportional to 32,031.72, 48,048.78 and 8,658.16

Step by Step Solution

1. Step 1: Write the proportion equation
   32,031.72 : 48,048.78 = 8,658.16 : x
2. Step 2: Convert to fraction form
   32,031.72/48,048.78 = 8,658.16/x
3. Step 3: Cross multiply
   32,031.72x = 48,048.78 × 8,658.16
4. Step 4: Simplify right side
   32,031.72x = 416,014,025.04
5. Step 5: Solve for x
   x = 416,014,025.04/32,031.72
6. Step 6: Final answer
   x = 12,987.56