Finding the Fourth Proportional to 6,353.89, 8,768.42 and 3,521.31

Step by Step Solution

1. Step 1: Write the proportion equation
   6,353.89 : 8,768.42 = 3,521.31 : x
2. Step 2: Convert to fraction form
   6,353.89/8,768.42 = 3,521.31/x
3. Step 3: Cross multiply
   6,353.89x = 8,768.42 × 3,521.31
4. Step 4: Simplify right side
   6,353.89x = 30,876,307.42
5. Step 5: Solve for x
   x = 30,876,307.42/6,353.89
6. Step 6: Final answer
   x = 4,859.44