Finding the Fourth Proportional to 9,291.64, 12,822.42 and 5,099.86

Step by Step Solution

1. Step 1: Write the proportion equation
   9,291.64 : 12,822.42 = 5,099.86 : x
2. Step 2: Convert to fraction form
   9,291.64/12,822.42 = 5,099.86/x
3. Step 3: Cross multiply
   9,291.64x = 12,822.42 × 5,099.86
4. Step 4: Simplify right side
   9,291.64x = 65,392,546.86
5. Step 5: Solve for x
   x = 65,392,546.86/9,291.64
6. Step 6: Final answer
   x = 7,037.78