Finding the Fourth Proportional to 12,116.02, 18,172.43 and 4,216.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,116.02 : 18,172.43 = 4,216.84 : x
2. Step 2: Convert to fraction form
   12,116.02/18,172.43 = 4,216.84/x
3. Step 3: Cross multiply
   12,116.02x = 18,172.43 × 4,216.84
4. Step 4: Simplify right side
   12,116.02x = 76,630,229.72
5. Step 5: Solve for x
   x = 76,630,229.72/12,116.02
6. Step 6: Final answer
   x = 6,324.70