Finding the Fourth Proportional to 8,606.10, 12,906.42 and 3,340.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,606.10 : 12,906.42 = 3,340.74 : x
2. Step 2: Convert to fraction form
   8,606.10/12,906.42 = 3,340.74/x
3. Step 3: Cross multiply
   8,606.10x = 12,906.42 × 3,340.74
4. Step 4: Simplify right side
   8,606.10x = 43,116,993.55
5. Step 5: Solve for x
   x = 43,116,993.55/8,606.10
6. Step 6: Final answer
   x = 5,010.05