Finding the Fourth Proportional to 9,699.12, 14,544.90 and 4,155.12

Step by Step Solution

1. Step 1: Write the proportion equation
   9,699.12 : 14,544.90 = 4,155.12 : x
2. Step 2: Convert to fraction form
   9,699.12/14,544.90 = 4,155.12/x
3. Step 3: Cross multiply
   9,699.12x = 14,544.90 × 4,155.12
4. Step 4: Simplify right side
   9,699.12x = 60,435,804.89
5. Step 5: Solve for x
   x = 60,435,804.89/9,699.12
6. Step 6: Final answer
   x = 6,231.06