Finding the Fourth Proportional to 3,863.82, 5,781.89 and 3,345.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,863.82 : 5,781.89 = 3,345.62 : x
2. Step 2: Convert to fraction form
   3,863.82/5,781.89 = 3,345.62/x
3. Step 3: Cross multiply
   3,863.82x = 5,781.89 × 3,345.62
4. Step 4: Simplify right side
   3,863.82x = 19,344,006.82
5. Step 5: Solve for x
   x = 19,344,006.82/3,863.82
6. Step 6: Final answer
   x = 5,006.45