Finding the Fourth Proportional to 22,238.56, 30,689.22 and 12,806.92

Step by Step Solution

1. Step 1: Write the proportion equation
   22,238.56 : 30,689.22 = 12,806.92 : x
2. Step 2: Convert to fraction form
   22,238.56/30,689.22 = 12,806.92/x
3. Step 3: Cross multiply
   22,238.56x = 30,689.22 × 12,806.92
4. Step 4: Simplify right side
   22,238.56x = 393,034,385.40
5. Step 5: Solve for x
   x = 393,034,385.40/22,238.56
6. Step 6: Final answer
   x = 17,673.55