Finding the Fourth Proportional to 22,513.45, 31,068.42 and 12,442.47

Step by Step Solution

1. Step 1: Write the proportion equation
   22,513.45 : 31,068.42 = 12,442.47 : x
2. Step 2: Convert to fraction form
   22,513.45/31,068.42 = 12,442.47/x
3. Step 3: Cross multiply
   22,513.45x = 31,068.42 × 12,442.47
4. Step 4: Simplify right side
   22,513.45x = 386,567,883.80
5. Step 5: Solve for x
   x = 386,567,883.80/22,513.45
6. Step 6: Final answer
   x = 17,170.53