Finding the Fourth Proportional to 10,964.27, 15,129.56 and 6,487.15

Step by Step Solution

1. Step 1: Write the proportion equation
   10,964.27 : 15,129.56 = 6,487.15 : x
2. Step 2: Convert to fraction form
   10,964.27/15,129.56 = 6,487.15/x
3. Step 3: Cross multiply
   10,964.27x = 15,129.56 × 6,487.15
4. Step 4: Simplify right side
   10,964.27x = 98,147,725.15
5. Step 5: Solve for x
   x = 98,147,725.15/10,964.27
6. Step 6: Final answer
   x = 8,951.60