Finding the Fourth Proportional to 6,411.31, 8,851.61 and 4,916.35

Step by Step Solution

1. Step 1: Write the proportion equation
   6,411.31 : 8,851.61 = 4,916.35 : x
2. Step 2: Convert to fraction form
   6,411.31/8,851.61 = 4,916.35/x
3. Step 3: Cross multiply
   6,411.31x = 8,851.61 × 4,916.35
4. Step 4: Simplify right side
   6,411.31x = 43,517,612.82
5. Step 5: Solve for x
   x = 43,517,612.82/6,411.31
6. Step 6: Final answer
   x = 6,787.63