Finding the Fourth Proportional to 10,087.92, 15,141.15 and 5,161.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,087.92 : 15,141.15 = 5,161.05 : x
2. Step 2: Convert to fraction form
   10,087.92/15,141.15 = 5,161.05/x
3. Step 3: Cross multiply
   10,087.92x = 15,141.15 × 5,161.05
4. Step 4: Simplify right side
   10,087.92x = 78,144,232.21
5. Step 5: Solve for x
   x = 78,144,232.21/10,087.92
6. Step 6: Final answer
   x = 7,746.32