Finding the Fourth Proportional to 5,339.97, 7,989.89 and 3,699.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,339.97 : 7,989.89 = 3,699.72 : x
2. Step 2: Convert to fraction form
   5,339.97/7,989.89 = 3,699.72/x
3. Step 3: Cross multiply
   5,339.97x = 7,989.89 × 3,699.72
4. Step 4: Simplify right side
   5,339.97x = 29,560,337.33
5. Step 5: Solve for x
   x = 29,560,337.33/5,339.97
6. Step 6: Final answer
   x = 5,535.67