Finding the Fourth Proportional to 12,119.16, 18,167.72 and 4,326.15

Step by Step Solution

1. Step 1: Write the proportion equation
   12,119.16 : 18,167.72 = 4,326.15 : x
2. Step 2: Convert to fraction form
   12,119.16/18,167.72 = 4,326.15/x
3. Step 3: Cross multiply
   12,119.16x = 18,167.72 × 4,326.15
4. Step 4: Simplify right side
   12,119.16x = 78,596,281.88
5. Step 5: Solve for x
   x = 78,596,281.88/12,119.16
6. Step 6: Final answer
   x = 6,485.29