Finding the Fourth Proportional to 3,856.05, 5,321.37 and 2,177.52

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.05 : 5,321.37 = 2,177.52 : x
2. Step 2: Convert to fraction form
   3,856.05/5,321.37 = 2,177.52/x
3. Step 3: Cross multiply
   3,856.05x = 5,321.37 × 2,177.52
4. Step 4: Simplify right side
   3,856.05x = 11,587,389.60
5. Step 5: Solve for x
   x = 11,587,389.60/3,856.05
6. Step 6: Final answer
   x = 3,004.99