Finding the Fourth Proportional to 22,020.24, 30,386.96 and 12,589.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,020.24 : 30,386.96 = 12,589.42 : x
2. Step 2: Convert to fraction form
   22,020.24/30,386.96 = 12,589.42/x
3. Step 3: Cross multiply
   22,020.24x = 30,386.96 × 12,589.42
4. Step 4: Simplify right side
   22,020.24x = 382,554,201.96
5. Step 5: Solve for x
   x = 382,554,201.96/22,020.24
6. Step 6: Final answer
   x = 17,372.84