Finding the Fourth Proportional to 8,559.86, 12,839.06 and 3,365.72

Step by Step Solution

1. Step 1: Write the proportion equation
   8,559.86 : 12,839.06 = 3,365.72 : x
2. Step 2: Convert to fraction form
   8,559.86/12,839.06 = 3,365.72/x
3. Step 3: Cross multiply
   8,559.86x = 12,839.06 × 3,365.72
4. Step 4: Simplify right side
   8,559.86x = 43,212,681.02
5. Step 5: Solve for x
   x = 43,212,681.02/8,559.86
6. Step 6: Final answer
   x = 5,048.29