Finding the Fourth Proportional to 12,045.19, 18,069.15 and 3,280.18

Step by Step Solution

1. Step 1: Write the proportion equation
   12,045.19 : 18,069.15 = 3,280.18 : x
2. Step 2: Convert to fraction form
   12,045.19/18,069.15 = 3,280.18/x
3. Step 3: Cross multiply
   12,045.19x = 18,069.15 × 3,280.18
4. Step 4: Simplify right side
   12,045.19x = 59,270,064.45
5. Step 5: Solve for x
   x = 59,270,064.45/12,045.19
6. Step 6: Final answer
   x = 4,920.64