Finding the Fourth Proportional to 3,401.82, 4,697.68 and 3,217.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,401.82 : 4,697.68 = 3,217.72 : x
2. Step 2: Convert to fraction form
   3,401.82/4,697.68 = 3,217.72/x
3. Step 3: Cross multiply
   3,401.82x = 4,697.68 × 3,217.72
4. Step 4: Simplify right side
   3,401.82x = 15,115,818.89
5. Step 5: Solve for x
   x = 15,115,818.89/3,401.82
6. Step 6: Final answer
   x = 4,443.45