Finding the Fourth Proportional to 21,610.50, 29,822.61 and 12,179.22

Step by Step Solution

1. Step 1: Write the proportion equation
   21,610.50 : 29,822.61 = 12,179.22 : x
2. Step 2: Convert to fraction form
   21,610.50/29,822.61 = 12,179.22/x
3. Step 3: Cross multiply
   21,610.50x = 29,822.61 × 12,179.22
4. Step 4: Simplify right side
   21,610.50x = 363,216,128.16
5. Step 5: Solve for x
   x = 363,216,128.16/21,610.50
6. Step 6: Final answer
   x = 16,807.39