Finding the Fourth Proportional to 12,723.67, 19,086.72 and 3,956.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,723.67 : 19,086.72 = 3,956.23 : x
2. Step 2: Convert to fraction form
   12,723.67/19,086.72 = 3,956.23/x
3. Step 3: Cross multiply
   12,723.67x = 19,086.72 × 3,956.23
4. Step 4: Simplify right side
   12,723.67x = 75,511,454.27
5. Step 5: Solve for x
   x = 75,511,454.27/12,723.67
6. Step 6: Final answer
   x = 5,934.72