Finding the Fourth Proportional to 3,781.71, 5,665.28 and 3,089.16

Step by Step Solution

1. Step 1: Write the proportion equation
   3,781.71 : 5,665.28 = 3,089.16 : x
2. Step 2: Convert to fraction form
   3,781.71/5,665.28 = 3,089.16/x
3. Step 3: Cross multiply
   3,781.71x = 5,665.28 × 3,089.16
4. Step 4: Simplify right side
   3,781.71x = 17,500,940.92
5. Step 5: Solve for x
   x = 17,500,940.92/3,781.71
6. Step 6: Final answer
   x = 4,627.79