Finding the Fourth Proportional to 3,930.67, 5,426.57 and 2,606.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,930.67 : 5,426.57 = 2,606.17 : x
2. Step 2: Convert to fraction form
   3,930.67/5,426.57 = 2,606.17/x
3. Step 3: Cross multiply
   3,930.67x = 5,426.57 × 2,606.17
4. Step 4: Simplify right side
   3,930.67x = 14,142,550.91
5. Step 5: Solve for x
   x = 14,142,550.91/3,930.67
6. Step 6: Final answer
   x = 3,598.00