Finding the Fourth Proportional to 12,300.70, 18,452.85 and 3,979.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,300.70 : 18,452.85 = 3,979.12 : x
2. Step 2: Convert to fraction form
   12,300.70/18,452.85 = 3,979.12/x
3. Step 3: Cross multiply
   12,300.70x = 18,452.85 × 3,979.12
4. Step 4: Simplify right side
   12,300.70x = 73,426,104.49
5. Step 5: Solve for x
   x = 73,426,104.49/12,300.70
6. Step 6: Final answer
   x = 5,969.26