Finding the Fourth Proportional to 12,989.24, 17,923.83 and 7,683.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,989.24 : 17,923.83 = 7,683.02 : x
2. Step 2: Convert to fraction form
   12,989.24/17,923.83 = 7,683.02/x
3. Step 3: Cross multiply
   12,989.24x = 17,923.83 × 7,683.02
4. Step 4: Simplify right side
   12,989.24x = 137,709,144.37
5. Step 5: Solve for x
   x = 137,709,144.37/12,989.24
6. Step 6: Final answer
   x = 10,601.79