Finding the Fourth Proportional to 31,016.78, 46,526.70 and 8,831.70

Step by Step Solution

1. Step 1: Write the proportion equation
   31,016.78 : 46,526.70 = 8,831.70 : x
2. Step 2: Convert to fraction form
   31,016.78/46,526.70 = 8,831.70/x
3. Step 3: Cross multiply
   31,016.78x = 46,526.70 × 8,831.70
4. Step 4: Simplify right side
   31,016.78x = 410,909,856.39
5. Step 5: Solve for x
   x = 410,909,856.39/31,016.78
6. Step 6: Final answer
   x = 13,247.99