Finding the Fourth Proportional to 31,906.76, 47,856.78 and 8,535.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,906.76 : 47,856.78 = 8,535.56 : x
2. Step 2: Convert to fraction form
   31,906.76/47,856.78 = 8,535.56/x
3. Step 3: Cross multiply
   31,906.76x = 47,856.78 × 8,535.56
4. Step 4: Simplify right side
   31,906.76x = 408,484,417.10
5. Step 5: Solve for x
   x = 408,484,417.10/31,906.76
6. Step 6: Final answer
   x = 12,802.44