Finding the Fourth Proportional to 31,105.89, 46,649.27 and 8,913.32

Step by Step Solution

1. Step 1: Write the proportion equation
   31,105.89 : 46,649.27 = 8,913.32 : x
2. Step 2: Convert to fraction form
   31,105.89/46,649.27 = 8,913.32/x
3. Step 3: Cross multiply
   31,105.89x = 46,649.27 × 8,913.32
4. Step 4: Simplify right side
   31,105.89x = 415,799,593.46
5. Step 5: Solve for x
   x = 415,799,593.46/31,105.89
6. Step 6: Final answer
   x = 13,367.23