Finding the Fourth Proportional to 12,083.58, 18,123.28 and 3,198.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,083.58 : 18,123.28 = 3,198.96 : x
2. Step 2: Convert to fraction form
   12,083.58/18,123.28 = 3,198.96/x
3. Step 3: Cross multiply
   12,083.58x = 18,123.28 × 3,198.96
4. Step 4: Simplify right side
   12,083.58x = 57,975,647.79
5. Step 5: Solve for x
   x = 57,975,647.79/12,083.58
6. Step 6: Final answer
   x = 4,797.89