Finding the Fourth Proportional to 8,818.90, 12,167.61 and 5,676.91

Step by Step Solution

1. Step 1: Write the proportion equation
   8,818.90 : 12,167.61 = 5,676.91 : x
2. Step 2: Convert to fraction form
   8,818.90/12,167.61 = 5,676.91/x
3. Step 3: Cross multiply
   8,818.90x = 12,167.61 × 5,676.91
4. Step 4: Simplify right side
   8,818.90x = 69,074,426.89
5. Step 5: Solve for x
   x = 69,074,426.89/8,818.90
6. Step 6: Final answer
   x = 7,832.54