Finding the Fourth Proportional to 6,872.72, 10,285.71 and 4,241.89

Step by Step Solution

1. Step 1: Write the proportion equation
   6,872.72 : 10,285.71 = 4,241.89 : x
2. Step 2: Convert to fraction form
   6,872.72/10,285.71 = 4,241.89/x
3. Step 3: Cross multiply
   6,872.72x = 10,285.71 × 4,241.89
4. Step 4: Simplify right side
   6,872.72x = 43,630,811.82
5. Step 5: Solve for x
   x = 43,630,811.82/6,872.72
6. Step 6: Final answer
   x = 6,348.41