Finding the Fourth Proportional to 6,426.24, 9,640.46 and 2,209.29

Step by Step Solution

1. Step 1: Write the proportion equation
   6,426.24 : 9,640.46 = 2,209.29 : x
2. Step 2: Convert to fraction form
   6,426.24/9,640.46 = 2,209.29/x
3. Step 3: Cross multiply
   6,426.24x = 9,640.46 × 2,209.29
4. Step 4: Simplify right side
   6,426.24x = 21,298,560.83
5. Step 5: Solve for x
   x = 21,298,560.83/6,426.24
6. Step 6: Final answer
   x = 3,314.31