Finding the Fourth Proportional to 12,222.37, 18,326.67 and 3,900.43

Step by Step Solution

1. Step 1: Write the proportion equation
   12,222.37 : 18,326.67 = 3,900.43 : x
2. Step 2: Convert to fraction form
   12,222.37/18,326.67 = 3,900.43/x
3. Step 3: Cross multiply
   12,222.37x = 18,326.67 × 3,900.43
4. Step 4: Simplify right side
   12,222.37x = 71,481,893.47
5. Step 5: Solve for x
   x = 71,481,893.47/12,222.37
6. Step 6: Final answer
   x = 5,848.45