Finding the Fourth Proportional to 9,665.82, 13,346.37 and 7,424.15

Step by Step Solution

1. Step 1: Write the proportion equation
   9,665.82 : 13,346.37 = 7,424.15 : x
2. Step 2: Convert to fraction form
   9,665.82/13,346.37 = 7,424.15/x
3. Step 3: Cross multiply
   9,665.82x = 13,346.37 × 7,424.15
4. Step 4: Simplify right side
   9,665.82x = 99,085,386.10
5. Step 5: Solve for x
   x = 99,085,386.10/9,665.82
6. Step 6: Final answer
   x = 10,251.11