Finding the Fourth Proportional to 7,028.31, 9,699.57 and 3,884.43

Step by Step Solution

1. Step 1: Write the proportion equation
   7,028.31 : 9,699.57 = 3,884.43 : x
2. Step 2: Convert to fraction form
   7,028.31/9,699.57 = 3,884.43/x
3. Step 3: Cross multiply
   7,028.31x = 9,699.57 × 3,884.43
4. Step 4: Simplify right side
   7,028.31x = 37,677,300.70
5. Step 5: Solve for x
   x = 37,677,300.70/7,028.31
6. Step 6: Final answer
   x = 5,360.79