Finding the Fourth Proportional to 8,519.52, 12,774.72 and 3,900

Step by Step Solution

1. Step 1: Write the proportion equation
   8,519.52 : 12,774.72 = 3,900 : x
2. Step 2: Convert to fraction form
   8,519.52/12,774.72 = 3,900/x
3. Step 3: Cross multiply
   8,519.52x = 12,774.72 × 3,900
4. Step 4: Simplify right side
   8,519.52x = 49,821,408
5. Step 5: Solve for x
   x = 49,821,408/8,519.52
6. Step 6: Final answer
   x = 5,847.91