Finding the Fourth Proportional to 12,123.07, 18,178.86 and 4,222.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.07 : 18,178.86 = 4,222.83 : x
2. Step 2: Convert to fraction form
   12,123.07/18,178.86 = 4,222.83/x
3. Step 3: Cross multiply
   12,123.07x = 18,178.86 × 4,222.83
4. Step 4: Simplify right side
   12,123.07x = 76,766,235.37
5. Step 5: Solve for x
   x = 76,766,235.37/12,123.07
6. Step 6: Final answer
   x = 6,332.24