Finding the Fourth Proportional to 31,103.64, 46,645.89 and 8,911.07

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.64 : 46,645.89 = 8,911.07 : x
2. Step 2: Convert to fraction form
   31,103.64/46,645.89 = 8,911.07/x
3. Step 3: Cross multiply
   31,103.64x = 46,645.89 × 8,911.07
4. Step 4: Simplify right side
   31,103.64x = 415,664,557.77
5. Step 5: Solve for x
   x = 415,664,557.77/31,103.64
6. Step 6: Final answer
   x = 13,363.86