Finding the Fourth Proportional to 23,010.57, 31,755.71 and 12,942.18

Step by Step Solution

1. Step 1: Write the proportion equation
   23,010.57 : 31,755.71 = 12,942.18 : x
2. Step 2: Convert to fraction form
   23,010.57/31,755.71 = 12,942.18/x
3. Step 3: Cross multiply
   23,010.57x = 31,755.71 × 12,942.18
4. Step 4: Simplify right side
   23,010.57x = 410,988,147.20
5. Step 5: Solve for x
   x = 410,988,147.20/23,010.57
6. Step 6: Final answer
   x = 17,860.84