Finding the Fourth Proportional to 12,288.66, 16,957.71 and 7,746.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,288.66 : 16,957.71 = 7,746.07 : x
2. Step 2: Convert to fraction form
   12,288.66/16,957.71 = 7,746.07/x
3. Step 3: Cross multiply
   12,288.66x = 16,957.71 × 7,746.07
4. Step 4: Simplify right side
   12,288.66x = 131,355,608.70
5. Step 5: Solve for x
   x = 131,355,608.70/12,288.66
6. Step 6: Final answer
   x = 10,689.17