Finding the Fourth Proportional to 3,864.30, 5,805.09 and 3,718.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864.30 : 5,805.09 = 3,718.50 : x
2. Step 2: Convert to fraction form
   3,864.30/5,805.09 = 3,718.50/x
3. Step 3: Cross multiply
   3,864.30x = 5,805.09 × 3,718.50
4. Step 4: Simplify right side
   3,864.30x = 21,586,227.17
5. Step 5: Solve for x
   x = 21,586,227.17/3,864.30
6. Step 6: Final answer
   x = 5,586.06