Finding the Fourth Proportional to 22,728.93, 31,365.93 and 12,659.31

Step by Step Solution

1. Step 1: Write the proportion equation
   22,728.93 : 31,365.93 = 12,659.31 : x
2. Step 2: Convert to fraction form
   22,728.93/31,365.93 = 12,659.31/x
3. Step 3: Cross multiply
   22,728.93x = 31,365.93 × 12,659.31
4. Step 4: Simplify right side
   22,728.93x = 397,071,031.31
5. Step 5: Solve for x
   x = 397,071,031.31/22,728.93
6. Step 6: Final answer
   x = 17,469.85