Finding the Fourth Proportional to 23,178.69, 31,986.56 and 12,568.30

Step by Step Solution

1. Step 1: Write the proportion equation
   23,178.69 : 31,986.56 = 12,568.30 : x
2. Step 2: Convert to fraction form
   23,178.69/31,986.56 = 12,568.30/x
3. Step 3: Cross multiply
   23,178.69x = 31,986.56 × 12,568.30
4. Step 4: Simplify right side
   23,178.69x = 402,016,633.50
5. Step 5: Solve for x
   x = 402,016,633.50/23,178.69
6. Step 6: Final answer
   x = 17,344.23