Finding the Fourth Proportional to 6,411.71, 9,617.52 and 3,879.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,411.71 : 9,617.52 = 3,879.31 : x
2. Step 2: Convert to fraction form
   6,411.71/9,617.52 = 3,879.31/x
3. Step 3: Cross multiply
   6,411.71x = 9,617.52 × 3,879.31
4. Step 4: Simplify right side
   6,411.71x = 37,309,341.51
5. Step 5: Solve for x
   x = 37,309,341.51/6,411.71
6. Step 6: Final answer
   x = 5,818.94