Finding the Fourth Proportional to 16,708.96, 23,061.12 and 12,722.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,708.96 : 23,061.12 = 12,722.56 : x
2. Step 2: Convert to fraction form
   16,708.96/23,061.12 = 12,722.56/x
3. Step 3: Cross multiply
   16,708.96x = 23,061.12 × 12,722.56
4. Step 4: Simplify right side
   16,708.96x = 293,396,482.87
5. Step 5: Solve for x
   x = 293,396,482.87/16,708.96
6. Step 6: Final answer
   x = 17,559.23