Finding the Fourth Proportional to 9,360.28, 12,906.69 and 6,377.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,360.28 : 12,906.69 = 6,377.86 : x
2. Step 2: Convert to fraction form
   9,360.28/12,906.69 = 6,377.86/x
3. Step 3: Cross multiply
   9,360.28x = 12,906.69 × 6,377.86
4. Step 4: Simplify right side
   9,360.28x = 82,317,061.88
5. Step 5: Solve for x
   x = 82,317,061.88/9,360.28
6. Step 6: Final answer
   x = 8,794.29