Finding the Fourth Proportional to 12,771.28, 19,143.43 and 4,868.69

Step by Step Solution

1. Step 1: Write the proportion equation
   12,771.28 : 19,143.43 = 4,868.69 : x
2. Step 2: Convert to fraction form
   12,771.28/19,143.43 = 4,868.69/x
3. Step 3: Cross multiply
   12,771.28x = 19,143.43 × 4,868.69
4. Step 4: Simplify right side
   12,771.28x = 93,203,499.91
5. Step 5: Solve for x
   x = 93,203,499.91/12,771.28
6. Step 6: Final answer
   x = 7,297.90