Finding the Fourth Proportional to 12,424.83, 18,630.86 and 3,658.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,424.83 : 18,630.86 = 3,658.61 : x
2. Step 2: Convert to fraction form
   12,424.83/18,630.86 = 3,658.61/x
3. Step 3: Cross multiply
   12,424.83x = 18,630.86 × 3,658.61
4. Step 4: Simplify right side
   12,424.83x = 68,162,957.55
5. Step 5: Solve for x
   x = 68,162,957.55/12,424.83
6. Step 6: Final answer
   x = 5,486.03