Finding the Fourth Proportional to 8,919.65, 12,308.76 and 4,940.82

Step by Step Solution

1. Step 1: Write the proportion equation
   8,919.65 : 12,308.76 = 4,940.82 : x
2. Step 2: Convert to fraction form
   8,919.65/12,308.76 = 4,940.82/x
3. Step 3: Cross multiply
   8,919.65x = 12,308.76 × 4,940.82
4. Step 4: Simplify right side
   8,919.65x = 60,815,367.58
5. Step 5: Solve for x
   x = 60,815,367.58/8,919.65
6. Step 6: Final answer
   x = 6,818.14