Finding the Fourth Proportional to 22,119.27, 30,524.36 and 12,689.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,119.27 : 30,524.36 = 12,689.31 : x
2. Step 2: Convert to fraction form
   22,119.27/30,524.36 = 12,689.31/x
3. Step 3: Cross multiply
   22,119.27x = 30,524.36 × 12,689.31
4. Step 4: Simplify right side
   22,119.27x = 387,333,003.15
5. Step 5: Solve for x
   x = 387,333,003.15/22,119.27
6. Step 6: Final answer
   x = 17,511.11