Finding the Fourth Proportional to 22,348.83, 30,837.96 and 12,915.57

Step by Step Solution

1. Step 1: Write the proportion equation
   22,348.83 : 30,837.96 = 12,915.57 : x
2. Step 2: Convert to fraction form
   22,348.83/30,837.96 = 12,915.57/x
3. Step 3: Cross multiply
   22,348.83x = 30,837.96 × 12,915.57
4. Step 4: Simplify right side
   22,348.83x = 398,289,831.04
5. Step 5: Solve for x
   x = 398,289,831.04/22,348.83
6. Step 6: Final answer
   x = 17,821.51