Finding the Fourth Proportional to 22,754.98, 31,389.12 and 13,321.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,754.98 : 31,389.12 = 13,321.72 : x
2. Step 2: Convert to fraction form
   22,754.98/31,389.12 = 13,321.72/x
3. Step 3: Cross multiply
   22,754.98x = 31,389.12 × 13,321.72
4. Step 4: Simplify right side
   22,754.98x = 418,157,067.69
5. Step 5: Solve for x
   x = 418,157,067.69/22,754.98
6. Step 6: Final answer
   x = 18,376.51