Finding the Fourth Proportional to 12,451.52, 17,180.16 and 8,485.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,451.52 : 17,180.16 = 8,485.76 : x
2. Step 2: Convert to fraction form
   12,451.52/17,180.16 = 8,485.76/x
3. Step 3: Cross multiply
   12,451.52x = 17,180.16 × 8,485.76
4. Step 4: Simplify right side
   12,451.52x = 145,786,714.52
5. Step 5: Solve for x
   x = 145,786,714.52/12,451.52
6. Step 6: Final answer
   x = 11,708.35