Finding the Fourth Proportional to 8,895.78, 12,276.17 and 4,916.90

Step by Step Solution

1. Step 1: Write the proportion equation
   8,895.78 : 12,276.17 = 4,916.90 : x
2. Step 2: Convert to fraction form
   8,895.78/12,276.17 = 4,916.90/x
3. Step 3: Cross multiply
   8,895.78x = 12,276.17 × 4,916.90
4. Step 4: Simplify right side
   8,895.78x = 60,360,614.31
5. Step 5: Solve for x
   x = 60,360,614.31/8,895.78
6. Step 6: Final answer
   x = 6,785.31