Finding the Fourth Proportional to 12,682.43, 19,027.69 and 5,287.67

Step by Step Solution

1. Step 1: Write the proportion equation
   12,682.43 : 19,027.69 = 5,287.67 : x
2. Step 2: Convert to fraction form
   12,682.43/19,027.69 = 5,287.67/x
3. Step 3: Cross multiply
   12,682.43x = 19,027.69 × 5,287.67
4. Step 4: Simplify right side
   12,682.43x = 100,612,145.58
5. Step 5: Solve for x
   x = 100,612,145.58/12,682.43
6. Step 6: Final answer
   x = 7,933.19