Finding the Fourth Proportional to 9,821.78, 14,729.33 and 3,580.33

Step by Step Solution

1. Step 1: Write the proportion equation
   9,821.78 : 14,729.33 = 3,580.33 : x
2. Step 2: Convert to fraction form
   9,821.78/14,729.33 = 3,580.33/x
3. Step 3: Cross multiply
   9,821.78x = 14,729.33 × 3,580.33
4. Step 4: Simplify right side
   9,821.78x = 52,735,770.53
5. Step 5: Solve for x
   x = 52,735,770.53/9,821.78
6. Step 6: Final answer
   x = 5,369.27