Finding the Fourth Proportional to 9,290.96, 12,821.48 and 5,099.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,290.96 : 12,821.48 = 5,099.12 : x
2. Step 2: Convert to fraction form
   9,290.96/12,821.48 = 5,099.12/x
3. Step 3: Cross multiply
   9,290.96x = 12,821.48 × 5,099.12
4. Step 4: Simplify right side
   9,290.96x = 65,378,265.10
5. Step 5: Solve for x
   x = 65,378,265.10/9,290.96
6. Step 6: Final answer
   x = 7,036.76