Finding the Fourth Proportional to 8,454.30, 12,670.50 and 5,676.84

Step by Step Solution

1. Step 1: Write the proportion equation
   8,454.30 : 12,670.50 = 5,676.84 : x
2. Step 2: Convert to fraction form
   8,454.30/12,670.50 = 5,676.84/x
3. Step 3: Cross multiply
   8,454.30x = 12,670.50 × 5,676.84
4. Step 4: Simplify right side
   8,454.30x = 71,928,401.22
5. Step 5: Solve for x
   x = 71,928,401.22/8,454.30
6. Step 6: Final answer
   x = 8,507.91