Finding the Fourth Proportional to 10,928.96, 15,082.56 and 8,271.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,928.96 : 15,082.56 = 8,271.68 : x
2. Step 2: Convert to fraction form
   10,928.96/15,082.56 = 8,271.68/x
3. Step 3: Cross multiply
   10,928.96x = 15,082.56 × 8,271.68
4. Step 4: Simplify right side
   10,928.96x = 124,758,109.90
5. Step 5: Solve for x
   x = 124,758,109.90/10,928.96
6. Step 6: Final answer
   x = 11,415.37