Finding the Fourth Proportional to 12,662.73, 17,474.99 and 7,949.61

Step by Step Solution

1. Step 1: Write the proportion equation
   12,662.73 : 17,474.99 = 7,949.61 : x
2. Step 2: Convert to fraction form
   12,662.73/17,474.99 = 7,949.61/x
3. Step 3: Cross multiply
   12,662.73x = 17,474.99 × 7,949.61
4. Step 4: Simplify right side
   12,662.73x = 138,919,355.25
5. Step 5: Solve for x
   x = 138,919,355.25/12,662.73
6. Step 6: Final answer
   x = 10,970.73