Finding the Fourth Proportional to 31,447.96, 47,162.33 and 8,960.47

Step by Step Solution

1. Step 1: Write the proportion equation
   31,447.96 : 47,162.33 = 8,960.47 : x
2. Step 2: Convert to fraction form
   31,447.96/47,162.33 = 8,960.47/x
3. Step 3: Cross multiply
   31,447.96x = 47,162.33 × 8,960.47
4. Step 4: Simplify right side
   31,447.96x = 422,596,362.48
5. Step 5: Solve for x
   x = 422,596,362.48/31,447.96
6. Step 6: Final answer
   x = 13,437.96