Finding the Fourth Proportional to 12,150.94, 16,772.49 and 7,116.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,150.94 : 16,772.49 = 7,116.78 : x
2. Step 2: Convert to fraction form
   12,150.94/16,772.49 = 7,116.78/x
3. Step 3: Cross multiply
   12,150.94x = 16,772.49 × 7,116.78
4. Step 4: Simplify right side
   12,150.94x = 119,366,121.38
5. Step 5: Solve for x
   x = 119,366,121.38/12,150.94
6. Step 6: Final answer
   x = 9,823.61