Finding the Fourth Proportional to 21,778.22, 30,056.46 and 12,348.50

Step by Step Solution

1. Step 1: Write the proportion equation
   21,778.22 : 30,056.46 = 12,348.50 : x
2. Step 2: Convert to fraction form
   21,778.22/30,056.46 = 12,348.50/x
3. Step 3: Cross multiply
   21,778.22x = 30,056.46 × 12,348.50
4. Step 4: Simplify right side
   21,778.22x = 371,152,196.31
5. Step 5: Solve for x
   x = 371,152,196.31/21,778.22
6. Step 6: Final answer
   x = 17,042.36