Finding the Fourth Proportional to 22,728.78, 31,374.27 and 13,300.38

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.78 : 31,374.27 = 13,300.38 : x
2. Step 2: Convert to fraction form
   22,728.78/31,374.27 = 13,300.38/x
3. Step 3: Cross multiply
   22,728.78x = 31,374.27 × 13,300.38
4. Step 4: Simplify right side
   22,728.78x = 417,289,713.22
5. Step 5: Solve for x
   x = 417,289,713.22/22,728.78
6. Step 6: Final answer
   x = 18,359.53