Finding the Fourth Proportional to 12,116.20, 18,171.18 and 4,323.88

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.20 : 18,171.18 = 4,323.88 : x
2. Step 2: Convert to fraction form
   12,116.20/18,171.18 = 4,323.88/x
3. Step 3: Cross multiply
   12,116.20x = 18,171.18 × 4,323.88
4. Step 4: Simplify right side
   12,116.20x = 78,570,001.78
5. Step 5: Solve for x
   x = 78,570,001.78/12,116.20
6. Step 6: Final answer
   x = 6,484.71