Finding the Fourth Proportional to 16,766.43, 25,134.15 and 7,272.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,766.43 : 25,134.15 = 7,272.78 : x
2. Step 2: Convert to fraction form
   16,766.43/25,134.15 = 7,272.78/x
3. Step 3: Cross multiply
   16,766.43x = 25,134.15 × 7,272.78
4. Step 4: Simplify right side
   16,766.43x = 182,795,143.44
5. Step 5: Solve for x
   x = 182,795,143.44/16,766.43
6. Step 6: Final answer
   x = 10,902.45