Finding the Fourth Proportional to 3,931.96, 5,419.33 and 3,371.71

Step by Step Solution

1. Step 1: Write the proportion equation
   3,931.96 : 5,419.33 = 3,371.71 : x
2. Step 2: Convert to fraction form
   3,931.96/5,419.33 = 3,371.71/x
3. Step 3: Cross multiply
   3,931.96x = 5,419.33 × 3,371.71
4. Step 4: Simplify right side
   3,931.96x = 18,272,409.15
5. Step 5: Solve for x
   x = 18,272,409.15/3,931.96
6. Step 6: Final answer
   x = 4,647.15