Finding the Fourth Proportional to 6,643.72, 9,168.42 and 3,848.68

Step by Step Solution

1. Step 1: Write the proportion equation
   6,643.72 : 9,168.42 = 3,848.68 : x
2. Step 2: Convert to fraction form
   6,643.72/9,168.42 = 3,848.68/x
3. Step 3: Cross multiply
   6,643.72x = 9,168.42 × 3,848.68
4. Step 4: Simplify right side
   6,643.72x = 35,286,314.69
5. Step 5: Solve for x
   x = 35,286,314.69/6,643.72
6. Step 6: Final answer
   x = 5,311.23