Finding the Fourth Proportional to 6,686.82, 10,020.51 and 3,398.76

Step by Step Solution

1. Step 1: Write the proportion equation
   6,686.82 : 10,020.51 = 3,398.76 : x
2. Step 2: Convert to fraction form
   6,686.82/10,020.51 = 3,398.76/x
3. Step 3: Cross multiply
   6,686.82x = 10,020.51 × 3,398.76
4. Step 4: Simplify right side
   6,686.82x = 34,057,308.57
5. Step 5: Solve for x
   x = 34,057,308.57/6,686.82
6. Step 6: Final answer
   x = 5,093.20