Finding the Fourth Proportional to 22,359.50, 30,856.11 and 12,423.50

Step by Step Solution

1. Step 1: Write the proportion equation
   22,359.50 : 30,856.11 = 12,423.50 : x
2. Step 2: Convert to fraction form
   22,359.50/30,856.11 = 12,423.50/x
3. Step 3: Cross multiply
   22,359.50x = 30,856.11 × 12,423.50
4. Step 4: Simplify right side
   22,359.50x = 383,340,882.59
5. Step 5: Solve for x
   x = 383,340,882.59/22,359.50
6. Step 6: Final answer
   x = 17,144.43