Finding the Fourth Proportional to 8,461.30, 12,689.52 and 2,914.42

Step by Step Solution

1. Step 1: Write the proportion equation
   8,461.30 : 12,689.52 = 2,914.42 : x
2. Step 2: Convert to fraction form
   8,461.30/12,689.52 = 2,914.42/x
3. Step 3: Cross multiply
   8,461.30x = 12,689.52 × 2,914.42
4. Step 4: Simplify right side
   8,461.30x = 36,982,590.88
5. Step 5: Solve for x
   x = 36,982,590.88/8,461.30
6. Step 6: Final answer
   x = 4,370.79