Finding the Fourth Proportional to 8,155.86, 12,243.78 and 5,384.88

Step by Step Solution

1. Step 1: Write the proportion equation
   8,155.86 : 12,243.78 = 5,384.88 : x
2. Step 2: Convert to fraction form
   8,155.86/12,243.78 = 5,384.88/x
3. Step 3: Cross multiply
   8,155.86x = 12,243.78 × 5,384.88
4. Step 4: Simplify right side
   8,155.86x = 65,931,286.05
5. Step 5: Solve for x
   x = 65,931,286.05/8,155.86
6. Step 6: Final answer
   x = 8,083.92