Finding the Fourth Proportional to 3,931.53, 5,411.61 and 3,371.46

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.53 : 5,411.61 = 3,371.46 : x
2. Step 2: Convert to fraction form
   3,931.53/5,411.61 = 3,371.46/x
3. Step 3: Cross multiply
   3,931.53x = 5,411.61 × 3,371.46
4. Step 4: Simplify right side
   3,931.53x = 18,245,026.65
5. Step 5: Solve for x
   x = 18,245,026.65/3,931.53
6. Step 6: Final answer
   x = 4,640.69