Finding the Fourth Proportional to 6,168.72, 9,243.24 and 3,855.36

Step by Step Solution

1. Step 1: Write the proportion equation
   6,168.72 : 9,243.24 = 3,855.36 : x
2. Step 2: Convert to fraction form
   6,168.72/9,243.24 = 3,855.36/x
3. Step 3: Cross multiply
   6,168.72x = 9,243.24 × 3,855.36
4. Step 4: Simplify right side
   6,168.72x = 35,636,017.77
5. Step 5: Solve for x
   x = 35,636,017.77/6,168.72
6. Step 6: Final answer
   x = 5,776.89