Finding the Fourth Proportional to 12,725.46, 19,087.04 and 3,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,725.46 : 19,087.04 = 3,959.50 : x
2. Step 2: Convert to fraction form
   12,725.46/19,087.04 = 3,959.50/x
3. Step 3: Cross multiply
   12,725.46x = 19,087.04 × 3,959.50
4. Step 4: Simplify right side
   12,725.46x = 75,575,134.88
5. Step 5: Solve for x
   x = 75,575,134.88/12,725.46
6. Step 6: Final answer
   x = 5,938.89