Finding the Fourth Proportional to 12,105.66, 18,158.58 and 3,340.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.66 : 18,158.58 = 3,340.38 : x
2. Step 2: Convert to fraction form
   12,105.66/18,158.58 = 3,340.38/x
3. Step 3: Cross multiply
   12,105.66x = 18,158.58 × 3,340.38
4. Step 4: Simplify right side
   12,105.66x = 60,656,557.46
5. Step 5: Solve for x
   x = 60,656,557.46/12,105.66
6. Step 6: Final answer
   x = 5,010.59