Finding the Fourth Proportional to 12,111.68, 18,167.02 and 4,216

Step by Step Solution

1. Step 1: Write the proportion equation
   12,111.68 : 18,167.02 = 4,216 : x
2. Step 2: Convert to fraction form
   12,111.68/18,167.02 = 4,216/x
3. Step 3: Cross multiply
   12,111.68x = 18,167.02 × 4,216
4. Step 4: Simplify right side
   12,111.68x = 76,592,156.32
5. Step 5: Solve for x
   x = 76,592,156.32/12,111.68
6. Step 6: Final answer
   x = 6,323.83