Finding the Fourth Proportional to 5,813.98, 8,721.42 and 3,489.82

Step by Step Solution

1. Step 1: Write the proportion equation
   5,813.98 : 8,721.42 = 3,489.82 : x
2. Step 2: Convert to fraction form
   5,813.98/8,721.42 = 3,489.82/x
3. Step 3: Cross multiply
   5,813.98x = 8,721.42 × 3,489.82
4. Step 4: Simplify right side
   5,813.98x = 30,436,185.94
5. Step 5: Solve for x
   x = 30,436,185.94/5,813.98
6. Step 6: Final answer
   x = 5,235.00