Finding the Fourth Proportional to 6,805.88, 9,391.98 and 3,821.72

Step by Step Solution

1. Step 1: Write the proportion equation
   6,805.88 : 9,391.98 = 3,821.72 : x
2. Step 2: Convert to fraction form
   6,805.88/9,391.98 = 3,821.72/x
3. Step 3: Cross multiply
   6,805.88x = 9,391.98 × 3,821.72
4. Step 4: Simplify right side
   6,805.88x = 35,893,517.81
5. Step 5: Solve for x
   x = 35,893,517.81/6,805.88
6. Step 6: Final answer
   x = 5,273.90