Finding the Fourth Proportional to 12,212.46, 18,318.50 and 3,892.37

Step by Step Solution

1. Step 1: Write the proportion equation
   12,212.46 : 18,318.50 = 3,892.37 : x
2. Step 2: Convert to fraction form
   12,212.46/18,318.50 = 3,892.37/x
3. Step 3: Cross multiply
   12,212.46x = 18,318.50 × 3,892.37
4. Step 4: Simplify right side
   12,212.46x = 71,302,268.79
5. Step 5: Solve for x
   x = 71,302,268.79/12,212.46
6. Step 6: Final answer
   x = 5,838.49