Finding the Fourth Proportional to 12,128.82, 18,193.77 and 3,363.54

Step by Step Solution

1. Step 1: Write the proportion equation
   12,128.82 : 18,193.77 = 3,363.54 : x
2. Step 2: Convert to fraction form
   12,128.82/18,193.77 = 3,363.54/x
3. Step 3: Cross multiply
   12,128.82x = 18,193.77 × 3,363.54
4. Step 4: Simplify right side
   12,128.82x = 61,195,473.15
5. Step 5: Solve for x
   x = 61,195,473.15/12,128.82
6. Step 6: Final answer
   x = 5,045.46