Finding the Fourth Proportional to 22,016.26, 30,387.88 and 13,520.42

Step by Step Solution

1. Step 1: Write the proportion equation
   22,016.26 : 30,387.88 = 13,520.42 : x
2. Step 2: Convert to fraction form
   22,016.26/30,387.88 = 13,520.42/x
3. Step 3: Cross multiply
   22,016.26x = 30,387.88 × 13,520.42
4. Step 4: Simplify right side
   22,016.26x = 410,856,900.51
5. Step 5: Solve for x
   x = 410,856,900.51/22,016.26
6. Step 6: Final answer
   x = 18,661.52