Finding the Fourth Proportional to 22,018.26, 30,390.64 and 13,522.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,018.26 : 30,390.64 = 13,522.42 : x
2. Step 2: Convert to fraction form
   22,018.26/30,390.64 = 13,522.42/x
3. Step 3: Cross multiply
   22,018.26x = 30,390.64 × 13,522.42
4. Step 4: Simplify right side
   22,018.26x = 410,954,998.15
5. Step 5: Solve for x
   x = 410,954,998.15/22,018.26
6. Step 6: Final answer
   x = 18,664.28