Finding the Fourth Proportional to 6,863.71, 9,471.90 and 3,719.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,863.71 : 9,471.90 = 3,719.89 : x
2. Step 2: Convert to fraction form
   6,863.71/9,471.90 = 3,719.89/x
3. Step 3: Cross multiply
   6,863.71x = 9,471.90 × 3,719.89
4. Step 4: Simplify right side
   6,863.71x = 35,234,426.09
5. Step 5: Solve for x
   x = 35,234,426.09/6,863.71
6. Step 6: Final answer
   x = 5,133.44