Finding the Fourth Proportional to 12,123.44, 18,076.82 and 12,099.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,123.44 : 18,076.82 = 12,099.76 : x
2. Step 2: Convert to fraction form
   12,123.44/18,076.82 = 12,099.76/x
3. Step 3: Cross multiply
   12,123.44x = 18,076.82 × 12,099.76
4. Step 4: Simplify right side
   12,123.44x = 218,725,183.56
5. Step 5: Solve for x
   x = 218,725,183.56/12,123.44
6. Step 6: Final answer
   x = 18,041.51