Finding the Fourth Proportional to 9,099.16, 12,556.12 and 5,119.48

Step by Step Solution

1. Step 1: Write the proportion equation
   9,099.16 : 12,556.12 = 5,119.48 : x
2. Step 2: Convert to fraction form
   9,099.16/12,556.12 = 5,119.48/x
3. Step 3: Cross multiply
   9,099.16x = 12,556.12 × 5,119.48
4. Step 4: Simplify right side
   9,099.16x = 64,280,805.22
5. Step 5: Solve for x
   x = 64,280,805.22/9,099.16
6. Step 6: Final answer
   x = 7,064.48