Finding the Fourth Proportional to 12,045.69, 18,069.89 and 3,280.68

Step by Step Solution

1. Step 1: Write the proportion equation
   12,045.69 : 18,069.89 = 3,280.68 : x
2. Step 2: Convert to fraction form
   12,045.69/18,069.89 = 3,280.68/x
3. Step 3: Cross multiply
   12,045.69x = 18,069.89 × 3,280.68
4. Step 4: Simplify right side
   12,045.69x = 59,281,510.32
5. Step 5: Solve for x
   x = 59,281,510.32/12,045.69
6. Step 6: Final answer
   x = 4,921.39