Finding the Fourth Proportional to 8,270.17, 12,401.33 and 3,206.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,270.17 : 12,401.33 = 3,206.72 : x
2. Step 2: Convert to fraction form
   8,270.17/12,401.33 = 3,206.72/x
3. Step 3: Cross multiply
   8,270.17x = 12,401.33 × 3,206.72
4. Step 4: Simplify right side
   8,270.17x = 39,767,576.90
5. Step 5: Solve for x
   x = 39,767,576.90/8,270.17
6. Step 6: Final answer
   x = 4,808.56