Finding the Fourth Proportional to 22,945.52, 31,664.84 and 13,391.96

Step by Step Solution

1. Step 1: Write the proportion equation
   22,945.52 : 31,664.84 = 13,391.96 : x
2. Step 2: Convert to fraction form
   22,945.52/31,664.84 = 13,391.96/x
3. Step 3: Cross multiply
   22,945.52x = 31,664.84 × 13,391.96
4. Step 4: Simplify right side
   22,945.52x = 424,054,270.69
5. Step 5: Solve for x
   x = 424,054,270.69/22,945.52
6. Step 6: Final answer
   x = 18,480.92