Finding the Fourth Proportional to 8,789.77, 13,180.40 and 3,245.73

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.77 : 13,180.40 = 3,245.73 : x
2. Step 2: Convert to fraction form
   8,789.77/13,180.40 = 3,245.73/x
3. Step 3: Cross multiply
   8,789.77x = 13,180.40 × 3,245.73
4. Step 4: Simplify right side
   8,789.77x = 42,780,019.69
5. Step 5: Solve for x
   x = 42,780,019.69/8,789.77
6. Step 6: Final answer
   x = 4,867.02