Finding the Fourth Proportional to 12,682.80, 19,028.27 and 5,288.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,682.80 : 19,028.27 = 5,288.04 : x
2. Step 2: Convert to fraction form
   12,682.80/19,028.27 = 5,288.04/x
3. Step 3: Cross multiply
   12,682.80x = 19,028.27 × 5,288.04
4. Step 4: Simplify right side
   12,682.80x = 100,622,226.45
5. Step 5: Solve for x
   x = 100,622,226.45/12,682.80
6. Step 6: Final answer
   x = 7,933.75