Finding the Fourth Proportional to 22,636.10, 31,256.46 and 14,691.89

Step by Step Solution

1. Step 1: Write the proportion equation
   22,636.10 : 31,256.46 = 14,691.89 : x
2. Step 2: Convert to fraction form
   22,636.10/31,256.46 = 14,691.89/x
3. Step 3: Cross multiply
   22,636.10x = 31,256.46 × 14,691.89
4. Step 4: Simplify right side
   22,636.10x = 459,216,315.83
5. Step 5: Solve for x
   x = 459,216,315.83/22,636.10
6. Step 6: Final answer
   x = 20,286.91