Finding the Fourth Proportional to 16,759.71, 23,128.69 and 9,206.76

Step by Step Solution

1. Step 1: Write the proportion equation
   16,759.71 : 23,128.69 = 9,206.76 : x
2. Step 2: Convert to fraction form
   16,759.71/23,128.69 = 9,206.76/x
3. Step 3: Cross multiply
   16,759.71x = 23,128.69 × 9,206.76
4. Step 4: Simplify right side
   16,759.71x = 212,940,378.92
5. Step 5: Solve for x
   x = 212,940,378.92/16,759.71
6. Step 6: Final answer
   x = 12,705.49