Finding the Fourth Proportional to 3,856.07, 5,775.91 and 3,577.23

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.07 : 5,775.91 = 3,577.23 : x
2. Step 2: Convert to fraction form
   3,856.07/5,775.91 = 3,577.23/x
3. Step 3: Cross multiply
   3,856.07x = 5,775.91 × 3,577.23
4. Step 4: Simplify right side
   3,856.07x = 20,661,749.59
5. Step 5: Solve for x
   x = 20,661,749.59/3,856.07
6. Step 6: Final answer
   x = 5,358.24