Finding the Fourth Proportional to 22,983.55, 31,716.89 and 12,775.21

Step by Step Solution

1. Step 1: Write the proportion equation
   22,983.55 : 31,716.89 = 12,775.21 : x
2. Step 2: Convert to fraction form
   22,983.55/31,716.89 = 12,775.21/x
3. Step 3: Cross multiply
   22,983.55x = 31,716.89 × 12,775.21
4. Step 4: Simplify right side
   22,983.55x = 405,189,866.42
5. Step 5: Solve for x
   x = 405,189,866.42/22,983.55
6. Step 6: Final answer
   x = 17,629.56