Finding the Fourth Proportional to 12,568.86, 18,843.57 and 5,638.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,568.86 : 18,843.57 = 5,638.50 : x
2. Step 2: Convert to fraction form
   12,568.86/18,843.57 = 5,638.50/x
3. Step 3: Cross multiply
   12,568.86x = 18,843.57 × 5,638.50
4. Step 4: Simplify right side
   12,568.86x = 106,249,469.45
5. Step 5: Solve for x
   x = 106,249,469.45/12,568.86
6. Step 6: Final answer
   x = 8,453.39