Finding the Fourth Proportional to 22,768.64, 31,428.24 and 13,337

Step by Step Solution

1. Step 1: Write the proportion equation
   22,768.64 : 31,428.24 = 13,337 : x
2. Step 2: Convert to fraction form
   22,768.64/31,428.24 = 13,337/x
3. Step 3: Cross multiply
   22,768.64x = 31,428.24 × 13,337
4. Step 4: Simplify right side
   22,768.64x = 419,158,436.88
5. Step 5: Solve for x
   x = 419,158,436.88/22,768.64
6. Step 6: Final answer
   x = 18,409.46