Finding the Fourth Proportional to 22,786.72, 31,446.48 and 13,354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,786.72 : 31,446.48 = 13,354.72 : x
2. Step 2: Convert to fraction form
   22,786.72/31,446.48 = 13,354.72/x
3. Step 3: Cross multiply
   22,786.72x = 31,446.48 × 13,354.72
4. Step 4: Simplify right side
   22,786.72x = 419,958,935.39
5. Step 5: Solve for x
   x = 419,958,935.39/22,786.72
6. Step 6: Final answer
   x = 18,429.99