Finding the Fourth Proportional to 16,863.31, 23,271.40 and 9,309.65

Step by Step Solution

1. Step 1: Write the proportion equation
   16,863.31 : 23,271.40 = 9,309.65 : x
2. Step 2: Convert to fraction form
   16,863.31/23,271.40 = 9,309.65/x
3. Step 3: Cross multiply
   16,863.31x = 23,271.40 × 9,309.65
4. Step 4: Simplify right side
   16,863.31x = 216,648,426.10
5. Step 5: Solve for x
   x = 216,648,426.10/16,863.31
6. Step 6: Final answer
   x = 12,847.33