Finding the Fourth Proportional to 12,100.89, 18,142.32 and 5,082.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,100.89 : 18,142.32 = 5,082.96 : x
2. Step 2: Convert to fraction form
   12,100.89/18,142.32 = 5,082.96/x
3. Step 3: Cross multiply
   12,100.89x = 18,142.32 × 5,082.96
4. Step 4: Simplify right side
   12,100.89x = 92,216,686.87
5. Step 5: Solve for x
   x = 92,216,686.87/12,100.89
6. Step 6: Final answer
   x = 7,620.65