Finding the Fourth Proportional to 12,155.22, 18,201.28 and 10,411.41

Step by Step Solution

1. Step 1: Write the proportion equation
   12,155.22 : 18,201.28 = 10,411.41 : x
2. Step 2: Convert to fraction form
   12,155.22/18,201.28 = 10,411.41/x
3. Step 3: Cross multiply
   12,155.22x = 18,201.28 × 10,411.41
4. Step 4: Simplify right side
   12,155.22x = 189,500,962.58
5. Step 5: Solve for x
   x = 189,500,962.58/12,155.22
6. Step 6: Final answer
   x = 15,590.09