Finding the Fourth Proportional to 7,141.67, 9,855.59 and 4,309.19

Step by Step Solution

1. Step 1: Write the proportion equation
   7,141.67 : 9,855.59 = 4,309.19 : x
2. Step 2: Convert to fraction form
   7,141.67/9,855.59 = 4,309.19/x
3. Step 3: Cross multiply
   7,141.67x = 9,855.59 × 4,309.19
4. Step 4: Simplify right side
   7,141.67x = 42,469,609.87
5. Step 5: Solve for x
   x = 42,469,609.87/7,141.67
6. Step 6: Final answer
   x = 5,946.73