Finding the Fourth Proportional to 12,399.22, 18,601.17 and 4,081.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,399.22 : 18,601.17 = 4,081.63 : x
2. Step 2: Convert to fraction form
   12,399.22/18,601.17 = 4,081.63/x
3. Step 3: Cross multiply
   12,399.22x = 18,601.17 × 4,081.63
4. Step 4: Simplify right side
   12,399.22x = 75,923,093.51
5. Step 5: Solve for x
   x = 75,923,093.51/12,399.22
6. Step 6: Final answer
   x = 6,123.22