Finding the Fourth Proportional to 8,511.34, 12,760.86 and 5,731.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,511.34 : 12,760.86 = 5,731.12 : x
2. Step 2: Convert to fraction form
   8,511.34/12,760.86 = 5,731.12/x
3. Step 3: Cross multiply
   8,511.34x = 12,760.86 × 5,731.12
4. Step 4: Simplify right side
   8,511.34x = 73,134,019.96
5. Step 5: Solve for x
   x = 73,134,019.96/8,511.34
6. Step 6: Final answer
   x = 8,592.54