Finding the Fourth Proportional to 22,857.69, 31,546.53 and 12,786.69

Step by Step Solution

1. Step 1: Write the proportion equation
   22,857.69 : 31,546.53 = 12,786.69 : x
2. Step 2: Convert to fraction form
   22,857.69/31,546.53 = 12,786.69/x
3. Step 3: Cross multiply
   22,857.69x = 31,546.53 × 12,786.69
4. Step 4: Simplify right side
   22,857.69x = 403,375,699.69
5. Step 5: Solve for x
   x = 403,375,699.69/22,857.69
6. Step 6: Final answer
   x = 17,647.26