Finding the Fourth Proportional to 8,289.18, 12,429.86 and 3,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,289.18 : 12,429.86 = 3,020.50 : x
2. Step 2: Convert to fraction form
   8,289.18/12,429.86 = 3,020.50/x
3. Step 3: Cross multiply
   8,289.18x = 12,429.86 × 3,020.50
4. Step 4: Simplify right side
   8,289.18x = 37,544,392.56
5. Step 5: Solve for x
   x = 37,544,392.56/8,289.18
6. Step 6: Final answer
   x = 4,529.33