Finding the Fourth Proportional to 12,269.94, 16,923.39 and 7,789.80

Step by Step Solution

1. Step 1: Write the proportion equation
   12,269.94 : 16,923.39 = 7,789.80 : x
2. Step 2: Convert to fraction form
   12,269.94/16,923.39 = 7,789.80/x
3. Step 3: Cross multiply
   12,269.94x = 16,923.39 × 7,789.80
4. Step 4: Simplify right side
   12,269.94x = 131,829,823.42
5. Step 5: Solve for x
   x = 131,829,823.42/12,269.94
6. Step 6: Final answer
   x = 10,744.13