Finding the Fourth Proportional to 8,610.72, 12,916.20 and 2,454.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,610.72 : 12,916.20 = 2,454.72 : x
2. Step 2: Convert to fraction form
   8,610.72/12,916.20 = 2,454.72/x
3. Step 3: Cross multiply
   8,610.72x = 12,916.20 × 2,454.72
4. Step 4: Simplify right side
   8,610.72x = 31,705,654.46
5. Step 5: Solve for x
   x = 31,705,654.46/8,610.72
6. Step 6: Final answer
   x = 3,682.11