Finding the Fourth Proportional to 9,665.15, 14,504.40 and 3,822.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,665.15 : 14,504.40 = 3,822.21 : x
2. Step 2: Convert to fraction form
   9,665.15/14,504.40 = 3,822.21/x
3. Step 3: Cross multiply
   9,665.15x = 14,504.40 × 3,822.21
4. Step 4: Simplify right side
   9,665.15x = 55,438,862.72
5. Step 5: Solve for x
   x = 55,438,862.72/9,665.15
6. Step 6: Final answer
   x = 5,735.96