Finding the Fourth Proportional to 12,949.85, 19,412.48 and 8,256.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,949.85 : 19,412.48 = 8,256.69 : x
2. Step 2: Convert to fraction form
   12,949.85/19,412.48 = 8,256.69/x
3. Step 3: Cross multiply
   12,949.85x = 19,412.48 × 8,256.69
4. Step 4: Simplify right side
   12,949.85x = 160,282,788.21
5. Step 5: Solve for x
   x = 160,282,788.21/12,949.85
6. Step 6: Final answer
   x = 12,377.20