Finding the Fourth Proportional to 22,786.50, 31,446.58 and 13,358.10

Step by Step Solution

1. Step 1: Write the proportion equation
   22,786.50 : 31,446.58 = 13,358.10 : x
2. Step 2: Convert to fraction form
   22,786.50/31,446.58 = 13,358.10/x
3. Step 3: Cross multiply
   22,786.50x = 31,446.58 × 13,358.10
4. Step 4: Simplify right side
   22,786.50x = 420,066,560.30
5. Step 5: Solve for x
   x = 420,066,560.30/22,786.50
6. Step 6: Final answer
   x = 18,434.89