Finding the Fourth Proportional to 9,291.54, 12,821.94 and 5,099.88

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.54 : 12,821.94 = 5,099.88 : x
2. Step 2: Convert to fraction form
   9,291.54/12,821.94 = 5,099.88/x
3. Step 3: Cross multiply
   9,291.54x = 12,821.94 × 5,099.88
4. Step 4: Simplify right side
   9,291.54x = 65,390,355.37
5. Step 5: Solve for x
   x = 65,390,355.37/9,291.54
6. Step 6: Final answer
   x = 7,037.62