Finding the Fourth Proportional to 12,451.02, 18,680.15 and 3,686.14

Step by Step Solution

1. Step 1: Write the proportion equation
   12,451.02 : 18,680.15 = 3,686.14 : x
2. Step 2: Convert to fraction form
   12,451.02/18,680.15 = 3,686.14/x
3. Step 3: Cross multiply
   12,451.02x = 18,680.15 × 3,686.14
4. Step 4: Simplify right side
   12,451.02x = 68,857,680.69
5. Step 5: Solve for x
   x = 68,857,680.69/12,451.02
6. Step 6: Final answer
   x = 5,530.29