Finding the Fourth Proportional to 6,288.69, 8,678.43 and 3,494.19

Step by Step Solution

1. Step 1: Write the proportion equation
   6,288.69 : 8,678.43 = 3,494.19 : x
2. Step 2: Convert to fraction form
   6,288.69/8,678.43 = 3,494.19/x
3. Step 3: Cross multiply
   6,288.69x = 8,678.43 × 3,494.19
4. Step 4: Simplify right side
   6,288.69x = 30,324,065.85
5. Step 5: Solve for x
   x = 30,324,065.85/6,288.69
6. Step 6: Final answer
   x = 4,822.00