Finding the Fourth Proportional to 31,081.32, 46,638.69 and 13,550.09

Step by Step Solution

1. Step 1: Write the proportion equation
   31,081.32 : 46,638.69 = 13,550.09 : x
2. Step 2: Convert to fraction form
   31,081.32/46,638.69 = 13,550.09/x
3. Step 3: Cross multiply
   31,081.32x = 46,638.69 × 13,550.09
4. Step 4: Simplify right side
   31,081.32x = 631,958,162.98
5. Step 5: Solve for x
   x = 631,958,162.98/31,081.32
6. Step 6: Final answer
   x = 20,332.41