Finding the Fourth Proportional to 8,456.50, 12,690.52 and 2,984.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,456.50 : 12,690.52 = 2,984.50 : x
2. Step 2: Convert to fraction form
   8,456.50/12,690.52 = 2,984.50/x
3. Step 3: Cross multiply
   8,456.50x = 12,690.52 × 2,984.50
4. Step 4: Simplify right side
   8,456.50x = 37,874,856.94
5. Step 5: Solve for x
   x = 37,874,856.94/8,456.50
6. Step 6: Final answer
   x = 4,478.79