Finding the Fourth Proportional to 16,139.87, 22,277.67 and 9,766.49

Step by Step Solution

1. Step 1: Write the proportion equation
   16,139.87 : 22,277.67 = 9,766.49 : x
2. Step 2: Convert to fraction form
   16,139.87/22,277.67 = 9,766.49/x
3. Step 3: Cross multiply
   16,139.87x = 22,277.67 × 9,766.49
4. Step 4: Simplify right side
   16,139.87x = 217,574,529.89
5. Step 5: Solve for x
   x = 217,574,529.89/16,139.87
6. Step 6: Final answer
   x = 13,480.57