Finding the Fourth Proportional to 22,680.96, 31,298.24 and 12,743.04

Step by Step Solution

1. Step 1: Write the proportion equation
   22,680.96 : 31,298.24 = 12,743.04 : x
2. Step 2: Convert to fraction form
   22,680.96/31,298.24 = 12,743.04/x
3. Step 3: Cross multiply
   22,680.96x = 31,298.24 × 12,743.04
4. Step 4: Simplify right side
   22,680.96x = 398,834,724.25
5. Step 5: Solve for x
   x = 398,834,724.25/22,680.96
6. Step 6: Final answer
   x = 17,584.56