Finding the Fourth Proportional to 23,178.86, 31,986.60 and 12,568.31

Step by Step Solution

1. Step 1: Write the proportion equation
   23,178.86 : 31,986.60 = 12,568.31 : x
2. Step 2: Convert to fraction form
   23,178.86/31,986.60 = 12,568.31/x
3. Step 3: Cross multiply
   23,178.86x = 31,986.60 × 12,568.31
4. Step 4: Simplify right side
   23,178.86x = 402,017,504.65
5. Step 5: Solve for x
   x = 402,017,504.65/23,178.86
6. Step 6: Final answer
   x = 17,344.14