Finding the Fourth Proportional to 10,123.56, 15,186.06 and 3,198

Step by Step Solution

1. Step 1: Write the proportion equation
   10,123.56 : 15,186.06 = 3,198 : x
2. Step 2: Convert to fraction form
   10,123.56/15,186.06 = 3,198/x
3. Step 3: Cross multiply
   10,123.56x = 15,186.06 × 3,198
4. Step 4: Simplify right side
   10,123.56x = 48,565,019.88
5. Step 5: Solve for x
   x = 48,565,019.88/10,123.56
6. Step 6: Final answer
   x = 4,797.23