Finding the Fourth Proportional to 22,238.50, 30,689.14 and 13,855

Step by Step Solution

1. Step 1: Write the proportion equation
   22,238.50 : 30,689.14 = 13,855 : x
2. Step 2: Convert to fraction form
   22,238.50/30,689.14 = 13,855/x
3. Step 3: Cross multiply
   22,238.50x = 30,689.14 × 13,855
4. Step 4: Simplify right side
   22,238.50x = 425,198,034.70
5. Step 5: Solve for x
   x = 425,198,034.70/22,238.50
6. Step 6: Final answer
   x = 19,119.91