Finding the Fourth Proportional to 22,728.18, 31,356.77 and 13,162.84

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.18 : 31,356.77 = 13,162.84 : x
2. Step 2: Convert to fraction form
   22,728.18/31,356.77 = 13,162.84/x
3. Step 3: Cross multiply
   22,728.18x = 31,356.77 × 13,162.84
4. Step 4: Simplify right side
   22,728.18x = 412,744,080.61
5. Step 5: Solve for x
   x = 412,744,080.61/22,728.18
6. Step 6: Final answer
   x = 18,160.02