Finding the Fourth Proportional to 22,566.96, 31,109.76 and 15,831.72

Step by Step Solution

1. Step 1: Write the proportion equation
   22,566.96 : 31,109.76 = 15,831.72 : x
2. Step 2: Convert to fraction form
   22,566.96/31,109.76 = 15,831.72/x
3. Step 3: Cross multiply
   22,566.96x = 31,109.76 × 15,831.72
4. Step 4: Simplify right side
   22,566.96x = 492,521,009.59
5. Step 5: Solve for x
   x = 492,521,009.59/22,566.96
6. Step 6: Final answer
   x = 21,824.87