Finding the Fourth Proportional to 22,386.12, 30,882.50 and 13,418.06

Step by Step Solution

1. Step 1: Write the proportion equation
   22,386.12 : 30,882.50 = 13,418.06 : x
2. Step 2: Convert to fraction form
   22,386.12/30,882.50 = 13,418.06/x
3. Step 3: Cross multiply
   22,386.12x = 30,882.50 × 13,418.06
4. Step 4: Simplify right side
   22,386.12x = 414,383,016.45
5. Step 5: Solve for x
   x = 414,383,016.45/22,386.12
6. Step 6: Final answer
   x = 18,510.71