Finding the Fourth Proportional to 8,819.04, 12,168.99 and 5,281.50

Step by Step Solution

1. Step 1: Write the proportion equation
   8,819.04 : 12,168.99 = 5,281.50 : x
2. Step 2: Convert to fraction form
   8,819.04/12,168.99 = 5,281.50/x
3. Step 3: Cross multiply
   8,819.04x = 12,168.99 × 5,281.50
4. Step 4: Simplify right side
   8,819.04x = 64,270,520.69
5. Step 5: Solve for x
   x = 64,270,520.69/8,819.04
6. Step 6: Final answer
   x = 7,287.70