Finding the Fourth Proportional to 10,082.19, 15,132.69 and 5,155.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,082.19 : 15,132.69 = 5,155.38 : x
2. Step 2: Convert to fraction form
   10,082.19/15,132.69 = 5,155.38/x
3. Step 3: Cross multiply
   10,082.19x = 15,132.69 × 5,155.38
4. Step 4: Simplify right side
   10,082.19x = 78,014,767.37
5. Step 5: Solve for x
   x = 78,014,767.37/10,082.19
6. Step 6: Final answer
   x = 7,737.88