Finding the Fourth Proportional to 10,864.72, 16,294.47 and 5,015.71

Step by Step Solution

1. Step 1: Write the proportion equation
   10,864.72 : 16,294.47 = 5,015.71 : x
2. Step 2: Convert to fraction form
   10,864.72/16,294.47 = 5,015.71/x
3. Step 3: Cross multiply
   10,864.72x = 16,294.47 × 5,015.71
4. Step 4: Simplify right side
   10,864.72x = 81,728,336.12
5. Step 5: Solve for x
   x = 81,728,336.12/10,864.72
6. Step 6: Final answer
   x = 7,522.36