Finding the Fourth Proportional to 3,891.54, 5,827.98 and 3,424.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,891.54 : 5,827.98 = 3,424.59 : x
2. Step 2: Convert to fraction form
   3,891.54/5,827.98 = 3,424.59/x
3. Step 3: Cross multiply
   3,891.54x = 5,827.98 × 3,424.59
4. Step 4: Simplify right side
   3,891.54x = 19,958,442.03
5. Step 5: Solve for x
   x = 19,958,442.03/3,891.54
6. Step 6: Final answer
   x = 5,128.67