Finding the Fourth Proportional to 10,434.72, 15,634.47 and 5,162.70

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.72 : 15,634.47 = 5,162.70 : x
2. Step 2: Convert to fraction form
   10,434.72/15,634.47 = 5,162.70/x
3. Step 3: Cross multiply
   10,434.72x = 15,634.47 × 5,162.70
4. Step 4: Simplify right side
   10,434.72x = 80,716,078.27
5. Step 5: Solve for x
   x = 80,716,078.27/10,434.72
6. Step 6: Final answer
   x = 7,735.34