Finding the Fourth Proportional to 16,426.70, 22,660.71 and 9,709.10

Step by Step Solution

1. Step 1: Write the proportion equation
   16,426.70 : 22,660.71 = 9,709.10 : x
2. Step 2: Convert to fraction form
   16,426.70/22,660.71 = 9,709.10/x
3. Step 3: Cross multiply
   16,426.70x = 22,660.71 × 9,709.10
4. Step 4: Simplify right side
   16,426.70x = 220,014,986.16
5. Step 5: Solve for x
   x = 220,014,986.16/16,426.70
6. Step 6: Final answer
   x = 13,393.75