Finding the Fourth Proportional to 8,564.47, 12,850.55 and 5,443.67

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564.47 : 12,850.55 = 5,443.67 : x
2. Step 2: Convert to fraction form
   8,564.47/12,850.55 = 5,443.67/x
3. Step 3: Cross multiply
   8,564.47x = 12,850.55 × 5,443.67
4. Step 4: Simplify right side
   8,564.47x = 69,954,153.52
5. Step 5: Solve for x
   x = 69,954,153.52/8,564.47
6. Step 6: Final answer
   x = 8,167.95