Finding the Fourth Proportional to 23,426.43, 32,328.57 and 12,816.65

Step by Step Solution

1. Step 1: Write the proportion equation
   23,426.43 : 32,328.57 = 12,816.65 : x
2. Step 2: Convert to fraction form
   23,426.43/32,328.57 = 12,816.65/x
3. Step 3: Cross multiply
   23,426.43x = 32,328.57 × 12,816.65
4. Step 4: Simplify right side
   23,426.43x = 414,343,805.05
5. Step 5: Solve for x
   x = 414,343,805.05/23,426.43
6. Step 6: Final answer
   x = 17,687.02