Finding the Fourth Proportional to 12,083.94, 18,123.78 and 3,199.35

Step by Step Solution

1. Step 1: Write the proportion equation
   12,083.94 : 18,123.78 = 3,199.35 : x
2. Step 2: Convert to fraction form
   12,083.94/18,123.78 = 3,199.35/x
3. Step 3: Cross multiply
   12,083.94x = 18,123.78 × 3,199.35
4. Step 4: Simplify right side
   12,083.94x = 57,984,315.54
5. Step 5: Solve for x
   x = 57,984,315.54/12,083.94
6. Step 6: Final answer
   x = 4,798.46