Finding the Fourth Proportional to 8,920.27, 12,308.96 and 4,940.38

Step by Step Solution

1. Step 1: Write the proportion equation
   8,920.27 : 12,308.96 = 4,940.38 : x
2. Step 2: Convert to fraction form
   8,920.27/12,308.96 = 4,940.38/x
3. Step 3: Cross multiply
   8,920.27x = 12,308.96 × 4,940.38
4. Step 4: Simplify right side
   8,920.27x = 60,810,939.80
5. Step 5: Solve for x
   x = 60,810,939.80/8,920.27
6. Step 6: Final answer
   x = 6,817.16