Finding the Fourth Proportional to 3,899.82, 5,850.91 and 3,486.34

Step by Step Solution

1. Step 1: Write the proportion equation
   3,899.82 : 5,850.91 = 3,486.34 : x
2. Step 2: Convert to fraction form
   3,899.82/5,850.91 = 3,486.34/x
3. Step 3: Cross multiply
   3,899.82x = 5,850.91 × 3,486.34
4. Step 4: Simplify right side
   3,899.82x = 20,398,232.31
5. Step 5: Solve for x
   x = 20,398,232.31/3,899.82
6. Step 6: Final answer
   x = 5,230.56