Finding the Fourth Proportional to 12,002.92, 18,005.49 and 3,118.23

Step by Step Solution

1. Step 1: Write the proportion equation
   12,002.92 : 18,005.49 = 3,118.23 : x
2. Step 2: Convert to fraction form
   12,002.92/18,005.49 = 3,118.23/x
3. Step 3: Cross multiply
   12,002.92x = 18,005.49 × 3,118.23
4. Step 4: Simplify right side
   12,002.92x = 56,145,259.08
5. Step 5: Solve for x
   x = 56,145,259.08/12,002.92
6. Step 6: Final answer
   x = 4,677.63