Finding the Fourth Proportional to 12,240.72, 16,860.69 and 9,583.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,240.72 : 16,860.69 = 9,583.38 : x
2. Step 2: Convert to fraction form
   12,240.72/16,860.69 = 9,583.38/x
3. Step 3: Cross multiply
   12,240.72x = 16,860.69 × 9,583.38
4. Step 4: Simplify right side
   12,240.72x = 161,582,399.33
5. Step 5: Solve for x
   x = 161,582,399.33/12,240.72
6. Step 6: Final answer
   x = 13,200.40