Finding the Fourth Proportional to 12,417.71, 18,629.18 and 3,651.89

Step by Step Solution

1. Step 1: Write the proportion equation
   12,417.71 : 18,629.18 = 3,651.89 : x
2. Step 2: Convert to fraction form
   12,417.71/18,629.18 = 3,651.89/x
3. Step 3: Cross multiply
   12,417.71x = 18,629.18 × 3,651.89
4. Step 4: Simplify right side
   12,417.71x = 68,031,697.89
5. Step 5: Solve for x
   x = 68,031,697.89/12,417.71
6. Step 6: Final answer
   x = 5,478.60