Finding the Fourth Proportional to 22,685.69, 31,306.25 and 12,749.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,685.69 : 31,306.25 = 12,749.69 : x
2. Step 2: Convert to fraction form
   22,685.69/31,306.25 = 12,749.69/x
3. Step 3: Cross multiply
   22,685.69x = 31,306.25 × 12,749.69
4. Step 4: Simplify right side
   22,685.69x = 399,144,982.56
5. Step 5: Solve for x
   x = 399,144,982.56/22,685.69
6. Step 6: Final answer
   x = 17,594.57