Finding the Fourth Proportional to 23,178.96, 31,987 and 12,568.54

Step by Step Solution

1. Step 1: Write the proportion equation
   23,178.96 : 31,987 = 12,568.54 : x
2. Step 2: Convert to fraction form
   23,178.96/31,987 = 12,568.54/x
3. Step 3: Cross multiply
   23,178.96x = 31,987 × 12,568.54
4. Step 4: Simplify right side
   23,178.96x = 402,029,888.98
5. Step 5: Solve for x
   x = 402,029,888.98/23,178.96
6. Step 6: Final answer
   x = 17,344.60