Finding the Fourth Proportional to 31,810.24, 47,714.52 and 8,436.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,810.24 : 47,714.52 = 8,436.88 : x
2. Step 2: Convert to fraction form
   31,810.24/47,714.52 = 8,436.88/x
3. Step 3: Cross multiply
   31,810.24x = 47,714.52 × 8,436.88
4. Step 4: Simplify right side
   31,810.24x = 402,561,679.50
5. Step 5: Solve for x
   x = 402,561,679.50/31,810.24
6. Step 6: Final answer
   x = 12,655.10