Finding the Fourth Proportional to 8,816.42, 12,155.59 and 6,454.46

Step by Step Solution

1. Step 1: Write the proportion equation
   8,816.42 : 12,155.59 = 6,454.46 : x
2. Step 2: Convert to fraction form
   8,816.42/12,155.59 = 6,454.46/x
3. Step 3: Cross multiply
   8,816.42x = 12,155.59 × 6,454.46
4. Step 4: Simplify right side
   8,816.42x = 78,457,769.43
5. Step 5: Solve for x
   x = 78,457,769.43/8,816.42
6. Step 6: Final answer
   x = 8,899.05