Finding the Fourth Proportional to 22,514.45, 31,069.80 and 12,443.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,514.45 : 31,069.80 = 12,443.47 : x
2. Step 2: Convert to fraction form
   22,514.45/31,069.80 = 12,443.47/x
3. Step 3: Cross multiply
   22,514.45x = 31,069.80 × 12,443.47
4. Step 4: Simplify right side
   22,514.45x = 386,616,124.21
5. Step 5: Solve for x
   x = 386,616,124.21/22,514.45
6. Step 6: Final answer
   x = 17,171.91