Finding the Fourth Proportional to 22,439.35, 30,956.57 and 13,359.63

Step by Step Solution

1. Step 1: Write the proportion equation
   22,439.35 : 30,956.57 = 13,359.63 : x
2. Step 2: Convert to fraction form
   22,439.35/30,956.57 = 13,359.63/x
3. Step 3: Cross multiply
   22,439.35x = 30,956.57 × 13,359.63
4. Step 4: Simplify right side
   22,439.35x = 413,568,321.27
5. Step 5: Solve for x
   x = 413,568,321.27/22,439.35
6. Step 6: Final answer
   x = 18,430.49