Finding the Fourth Proportional to 22,663.94, 31,273.98 and 13,238

Step by Step Solution

1. Step 1: Write the proportion equation
   22,663.94 : 31,273.98 = 13,238 : x
2. Step 2: Convert to fraction form
   22,663.94/31,273.98 = 13,238/x
3. Step 3: Cross multiply
   22,663.94x = 31,273.98 × 13,238
4. Step 4: Simplify right side
   22,663.94x = 414,004,947.24
5. Step 5: Solve for x
   x = 414,004,947.24/22,663.94
6. Step 6: Final answer
   x = 18,267.12