Finding the Fourth Proportional to 22,315, 30,793.50 and 12,243.28

Step by Step Solution

1. Step 1: Write the proportion equation
   22,315 : 30,793.50 = 12,243.28 : x
2. Step 2: Convert to fraction form
   22,315/30,793.50 = 12,243.28/x
3. Step 3: Cross multiply
   22,315x = 30,793.50 × 12,243.28
4. Step 4: Simplify right side
   22,315x = 377,013,442.68
5. Step 5: Solve for x
   x = 377,013,442.68/22,315
6. Step 6: Final answer
   x = 16,895.07