Finding the Fourth Proportional to 5,176.71, 7,761.83 and 3,443.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,176.71 : 7,761.83 = 3,443.31 : x
2. Step 2: Convert to fraction form
   5,176.71/7,761.83 = 3,443.31/x
3. Step 3: Cross multiply
   5,176.71x = 7,761.83 × 3,443.31
4. Step 4: Simplify right side
   5,176.71x = 26,726,369.64
5. Step 5: Solve for x
   x = 26,726,369.64/5,176.71
6. Step 6: Final answer
   x = 5,162.81