Finding the Fourth Proportional to 31,105.39, 46,648.51 and 8,912.82

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.39 : 46,648.51 = 8,912.82 : x
2. Step 2: Convert to fraction form
   31,105.39/46,648.51 = 8,912.82/x
3. Step 3: Cross multiply
   31,105.39x = 46,648.51 × 8,912.82
4. Step 4: Simplify right side
   31,105.39x = 415,769,772.90
5. Step 5: Solve for x
   x = 415,769,772.90/31,105.39
6. Step 6: Final answer
   x = 13,366.49