Finding the Fourth Proportional to 12,081.04, 18,118.72 and 3,316.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,081.04 : 18,118.72 = 3,316.64 : x
2. Step 2: Convert to fraction form
   12,081.04/18,118.72 = 3,316.64/x
3. Step 3: Cross multiply
   12,081.04x = 18,118.72 × 3,316.64
4. Step 4: Simplify right side
   12,081.04x = 60,093,271.50
5. Step 5: Solve for x
   x = 60,093,271.50/12,081.04
6. Step 6: Final answer
   x = 4,974.18