Finding the Fourth Proportional to 22,255.53, 30,702.24 and 12,818.61

Step by Step Solution

1. Step 1: Write the proportion equation
   22,255.53 : 30,702.24 = 12,818.61 : x
2. Step 2: Convert to fraction form
   22,255.53/30,702.24 = 12,818.61/x
3. Step 3: Cross multiply
   22,255.53x = 30,702.24 × 12,818.61
4. Step 4: Simplify right side
   22,255.53x = 393,560,040.69
5. Step 5: Solve for x
   x = 393,560,040.69/22,255.53
6. Step 6: Final answer
   x = 17,683.70