Finding the Fourth Proportional to 6,667.20, 9,992.43 and 3,381.12

Step by Step Solution

1. Step 1: Write the proportion equation
   6,667.20 : 9,992.43 = 3,381.12 : x
2. Step 2: Convert to fraction form
   6,667.20/9,992.43 = 3,381.12/x
3. Step 3: Cross multiply
   6,667.20x = 9,992.43 × 3,381.12
4. Step 4: Simplify right side
   6,667.20x = 33,785,604.92
5. Step 5: Solve for x
   x = 33,785,604.92/6,667.20
6. Step 6: Final answer
   x = 5,067.44