Finding the Fourth Proportional to 10,987.10, 15,162.18 and 5,951.36

Step by Step Solution

1. Step 1: Write the proportion equation
   10,987.10 : 15,162.18 = 5,951.36 : x
2. Step 2: Convert to fraction form
   10,987.10/15,162.18 = 5,951.36/x
3. Step 3: Cross multiply
   10,987.10x = 15,162.18 × 5,951.36
4. Step 4: Simplify right side
   10,987.10x = 90,235,591.56
5. Step 5: Solve for x
   x = 90,235,591.56/10,987.10
6. Step 6: Final answer
   x = 8,212.87