Finding the Fourth Proportional to 8,440.29, 12,659.31 and 2,200.74

Step by Step Solution

1. Step 1: Write the proportion equation
   8,440.29 : 12,659.31 = 2,200.74 : x
2. Step 2: Convert to fraction form
   8,440.29/12,659.31 = 2,200.74/x
3. Step 3: Cross multiply
   8,440.29x = 12,659.31 × 2,200.74
4. Step 4: Simplify right side
   8,440.29x = 27,859,849.89
5. Step 5: Solve for x
   x = 27,859,849.89/8,440.29
6. Step 6: Final answer
   x = 3,300.82