Finding the Fourth Proportional to 10,872.56, 15,003.68 and 6,156.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,872.56 : 15,003.68 = 6,156.72 : x
2. Step 2: Convert to fraction form
   10,872.56/15,003.68 = 6,156.72/x
3. Step 3: Cross multiply
   10,872.56x = 15,003.68 × 6,156.72
4. Step 4: Simplify right side
   10,872.56x = 92,373,456.73
5. Step 5: Solve for x
   x = 92,373,456.73/10,872.56
6. Step 6: Final answer
   x = 8,496.02