Finding the Fourth Proportional to 8,099.72, 12,153.42 and 4,819.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,099.72 : 12,153.42 = 4,819.28 : x
2. Step 2: Convert to fraction form
   8,099.72/12,153.42 = 4,819.28/x
3. Step 3: Cross multiply
   8,099.72x = 12,153.42 × 4,819.28
4. Step 4: Simplify right side
   8,099.72x = 58,570,733.94
5. Step 5: Solve for x
   x = 58,570,733.94/8,099.72
6. Step 6: Final answer
   x = 7,231.20