Finding the Fourth Proportional to 6,290.82, 8,681.85 and 3,935.34

Step by Step Solution

1. Step 1: Write the proportion equation
   6,290.82 : 8,681.85 = 3,935.34 : x
2. Step 2: Convert to fraction form
   6,290.82/8,681.85 = 3,935.34/x
3. Step 3: Cross multiply
   6,290.82x = 8,681.85 × 3,935.34
4. Step 4: Simplify right side
   6,290.82x = 34,166,031.58
5. Step 5: Solve for x
   x = 34,166,031.58/6,290.82
6. Step 6: Final answer
   x = 5,431.09