Finding the Fourth Proportional to 8,412.84, 12,647.22 and 5,965.20

Step by Step Solution

1. Step 1: Write the proportion equation
   8,412.84 : 12,647.22 = 5,965.20 : x
2. Step 2: Convert to fraction form
   8,412.84/12,647.22 = 5,965.20/x
3. Step 3: Cross multiply
   8,412.84x = 12,647.22 × 5,965.20
4. Step 4: Simplify right side
   8,412.84x = 75,443,196.74
5. Step 5: Solve for x
   x = 75,443,196.74/8,412.84
6. Step 6: Final answer
   x = 8,967.63