Finding the Fourth Proportional to 22,792.72, 31,454.76 and 13,360.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,792.72 : 31,454.76 = 13,360.72 : x
2. Step 2: Convert to fraction form
   22,792.72/31,454.76 = 13,360.72/x
3. Step 3: Cross multiply
   22,792.72x = 31,454.76 × 13,360.72
4. Step 4: Simplify right side
   22,792.72x = 420,258,241.03
5. Step 5: Solve for x
   x = 420,258,241.03/22,792.72
6. Step 6: Final answer
   x = 18,438.27