Finding the Fourth Proportional to 21,541.86, 29,729.22 and 12,111.06

Step by Step Solution

1. Step 1: Write the proportion equation
   21,541.86 : 29,729.22 = 12,111.06 : x
2. Step 2: Convert to fraction form
   21,541.86/29,729.22 = 12,111.06/x
3. Step 3: Cross multiply
   21,541.86x = 29,729.22 × 12,111.06
4. Step 4: Simplify right side
   21,541.86x = 360,052,367.17
5. Step 5: Solve for x
   x = 360,052,367.17/21,541.86
6. Step 6: Final answer
   x = 16,714.08