Finding the Fourth Proportional to 22,424, 30,945.12 and 12,488

Step by Step Solution

1. Step 1: Write the proportion equation
   22,424 : 30,945.12 = 12,488 : x
2. Step 2: Convert to fraction form
   22,424/30,945.12 = 12,488/x
3. Step 3: Cross multiply
   22,424x = 30,945.12 × 12,488
4. Step 4: Simplify right side
   22,424x = 386,442,658.56
5. Step 5: Solve for x
   x = 386,442,658.56/22,424
6. Step 6: Final answer
   x = 17,233.44