Finding the Fourth Proportional to 12,079.32, 18,118.17 and 3,313.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,079.32 : 18,118.17 = 3,313.50 : x
2. Step 2: Convert to fraction form
   12,079.32/18,118.17 = 3,313.50/x
3. Step 3: Cross multiply
   12,079.32x = 18,118.17 × 3,313.50
4. Step 4: Simplify right side
   12,079.32x = 60,034,556.30
5. Step 5: Solve for x
   x = 60,034,556.30/12,079.32
6. Step 6: Final answer
   x = 4,970.03