Finding the Fourth Proportional to 8,764.36, 13,138.72 and 3,216.41

Step by Step Solution

1. Step 1: Write the proportion equation
   8,764.36 : 13,138.72 = 3,216.41 : x
2. Step 2: Convert to fraction form
   8,764.36/13,138.72 = 3,216.41/x
3. Step 3: Cross multiply
   8,764.36x = 13,138.72 × 3,216.41
4. Step 4: Simplify right side
   8,764.36x = 42,259,545.88
5. Step 5: Solve for x
   x = 42,259,545.88/8,764.36
6. Step 6: Final answer
   x = 4,821.75