Finding the Fourth Proportional to 3,856.50, 5,321.98 and 2,200.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.50 : 5,321.98 = 2,200.50 : x
2. Step 2: Convert to fraction form
   3,856.50/5,321.98 = 2,200.50/x
3. Step 3: Cross multiply
   3,856.50x = 5,321.98 × 2,200.50
4. Step 4: Simplify right side
   3,856.50x = 11,711,016.99
5. Step 5: Solve for x
   x = 11,711,016.99/3,856.50
6. Step 6: Final answer
   x = 3,036.70