Finding the Fourth Proportional to 12,367.98, 18,521.20 and 8,652.82

Step by Step Solution

1. Step 1: Write the proportion equation
   12,367.98 : 18,521.20 = 8,652.82 : x
2. Step 2: Convert to fraction form
   12,367.98/18,521.20 = 8,652.82/x
3. Step 3: Cross multiply
   12,367.98x = 18,521.20 × 8,652.82
4. Step 4: Simplify right side
   12,367.98x = 160,260,609.78
5. Step 5: Solve for x
   x = 160,260,609.78/12,367.98
6. Step 6: Final answer
   x = 12,957.70