Finding the Fourth Proportional to 4,086.50, 5,639.46 and 2,223.50

Step by Step Solution

1. Step 1: Write the proportion equation
   4,086.50 : 5,639.46 = 2,223.50 : x
2. Step 2: Convert to fraction form
   4,086.50/5,639.46 = 2,223.50/x
3. Step 3: Cross multiply
   4,086.50x = 5,639.46 × 2,223.50
4. Step 4: Simplify right side
   4,086.50x = 12,539,339.31
5. Step 5: Solve for x
   x = 12,539,339.31/4,086.50
6. Step 6: Final answer
   x = 3,068.48