Finding the Fourth Proportional to 7,028.72, 9,699.72 and 3,884.88

Step by Step Solution

1. Step 1: Write the proportion equation
   7,028.72 : 9,699.72 = 3,884.88 : x
2. Step 2: Convert to fraction form
   7,028.72/9,699.72 = 3,884.88/x
3. Step 3: Cross multiply
   7,028.72x = 9,699.72 × 3,884.88
4. Step 4: Simplify right side
   7,028.72x = 37,682,248.23
5. Step 5: Solve for x
   x = 37,682,248.23/7,028.72
6. Step 6: Final answer
   x = 5,361.18