Finding the Fourth Proportional to 8,285.76, 12,429.72 and 3,020.76

Step by Step Solution

1. Step 1: Write the proportion equation
   8,285.76 : 12,429.72 = 3,020.76 : x
2. Step 2: Convert to fraction form
   8,285.76/12,429.72 = 3,020.76/x
3. Step 3: Cross multiply
   8,285.76x = 12,429.72 × 3,020.76
4. Step 4: Simplify right side
   8,285.76x = 37,547,200.99
5. Step 5: Solve for x
   x = 37,547,200.99/8,285.76
6. Step 6: Final answer
   x = 4,531.53