Finding the Fourth Proportional to 8,778.20, 13,166.00 and 3,230.25

Step by Step Solution

1. Step 1: Write the proportion equation
   8,778.20 : 13,166.00 = 3,230.25 : x
2. Step 2: Convert to fraction form
   8,778.20/13,166.00 = 3,230.25/x
3. Step 3: Cross multiply
   8,778.20x = 13,166.00 × 3,230.25
4. Step 4: Simplify right side
   8,778.20x = 42,529,389.52
5. Step 5: Solve for x
   x = 42,529,389.52/8,778.20
6. Step 6: Final answer
   x = 4,844.89