Finding the Fourth Proportional to 22,022.72, 30,391.37 and 12,462.40

Step by Step Solution

1. Step 1: Write the proportion equation
   22,022.72 : 30,391.37 = 12,462.40 : x
2. Step 2: Convert to fraction form
   22,022.72/30,391.37 = 12,462.40/x
3. Step 3: Cross multiply
   22,022.72x = 30,391.37 × 12,462.40
4. Step 4: Simplify right side
   22,022.72x = 378,749,271.20
5. Step 5: Solve for x
   x = 378,749,271.20/22,022.72
6. Step 6: Final answer
   x = 17,198.12