Finding the Fourth Proportional to 22,792.95, 31,455.61 and 12,721.82

Step by Step Solution

1. Step 1: Write the proportion equation
   22,792.95 : 31,455.61 = 12,721.82 : x
2. Step 2: Convert to fraction form
   22,792.95/31,455.61 = 12,721.82/x
3. Step 3: Cross multiply
   22,792.95x = 31,455.61 × 12,721.82
4. Step 4: Simplify right side
   22,792.95x = 400,172,419.33
5. Step 5: Solve for x
   x = 400,172,419.33/22,792.95
6. Step 6: Final answer
   x = 17,556.85