Finding the Fourth Proportional to 8,919.68, 12,308.31 and 4,940.71

Step by Step Solution

1. Step 1: Write the proportion equation
   8,919.68 : 12,308.31 = 4,940.71 : x
2. Step 2: Convert to fraction form
   8,919.68/12,308.31 = 4,940.71/x
3. Step 3: Cross multiply
   8,919.68x = 12,308.31 × 4,940.71
4. Step 4: Simplify right side
   8,919.68x = 60,811,759.53
5. Step 5: Solve for x
   x = 60,811,759.53/8,919.68
6. Step 6: Final answer
   x = 6,817.71