Finding the Fourth Proportional to 20,617.99, 30,943.38 and 7,474.12

Step by Step Solution

1. Step 1: Write the proportion equation
   20,617.99 : 30,943.38 = 7,474.12 : x
2. Step 2: Convert to fraction form
   20,617.99/30,943.38 = 7,474.12/x
3. Step 3: Cross multiply
   20,617.99x = 30,943.38 × 7,474.12
4. Step 4: Simplify right side
   20,617.99x = 231,274,535.33
5. Step 5: Solve for x
   x = 231,274,535.33/20,617.99
6. Step 6: Final answer
   x = 11,217.12