Finding the Fourth Proportional to 12,105.42, 18,157.65 and 3,340.10

Step by Step Solution

1. Step 1: Write the proportion equation
   12,105.42 : 18,157.65 = 3,340.10 : x
2. Step 2: Convert to fraction form
   12,105.42/18,157.65 = 3,340.10/x
3. Step 3: Cross multiply
   12,105.42x = 18,157.65 × 3,340.10
4. Step 4: Simplify right side
   12,105.42x = 60,648,275.98
5. Step 5: Solve for x
   x = 60,648,275.98/12,105.42
6. Step 6: Final answer
   x = 5,010.01