Finding the Fourth Proportional to 8,564.89, 12,839.54 and 3,296.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,564.89 : 12,839.54 = 3,296.54 : x
2. Step 2: Convert to fraction form
   8,564.89/12,839.54 = 3,296.54/x
3. Step 3: Cross multiply
   8,564.89x = 12,839.54 × 3,296.54
4. Step 4: Simplify right side
   8,564.89x = 42,325,976.51
5. Step 5: Solve for x
   x = 42,325,976.51/8,564.89
6. Step 6: Final answer
   x = 4,941.80