Finding the Fourth Proportional to 8,917.38, 12,306.06 and 4,938.30

Step by Step Solution

1. Step 1: Write the proportion equation
   8,917.38 : 12,306.06 = 4,938.30 : x
2. Step 2: Convert to fraction form
   8,917.38/12,306.06 = 4,938.30/x
3. Step 3: Cross multiply
   8,917.38x = 12,306.06 × 4,938.30
4. Step 4: Simplify right side
   8,917.38x = 60,771,016.10
5. Step 5: Solve for x
   x = 60,771,016.10/8,917.38
6. Step 6: Final answer
   x = 6,814.90