Finding the Fourth Proportional to 23,178.81, 31,986.76 and 12,568.45

Step by Step Solution

1. Step 1: Write the proportion equation
   23,178.81 : 31,986.76 = 12,568.45 : x
2. Step 2: Convert to fraction form
   23,178.81/31,986.76 = 12,568.45/x
3. Step 3: Cross multiply
   23,178.81x = 31,986.76 × 12,568.45
4. Step 4: Simplify right side
   23,178.81x = 402,023,993.72
5. Step 5: Solve for x
   x = 402,023,993.72/23,178.81
6. Step 6: Final answer
   x = 17,344.46