Finding the Fourth Proportional to 22,223.06, 30,671.16 and 12,789.80

Step by Step Solution

1. Step 1: Write the proportion equation
   22,223.06 : 30,671.16 = 12,789.80 : x
2. Step 2: Convert to fraction form
   22,223.06/30,671.16 = 12,789.80/x
3. Step 3: Cross multiply
   22,223.06x = 30,671.16 × 12,789.80
4. Step 4: Simplify right side
   22,223.06x = 392,278,002.17
5. Step 5: Solve for x
   x = 392,278,002.17/22,223.06
6. Step 6: Final answer
   x = 17,651.84