Finding the Fourth Proportional to 31,213.82, 46,818.09 and 13,443.77

Step by Step Solution

1. Step 1: Write the proportion equation
   31,213.82 : 46,818.09 = 13,443.77 : x
2. Step 2: Convert to fraction form
   31,213.82/46,818.09 = 13,443.77/x
3. Step 3: Cross multiply
   31,213.82x = 46,818.09 × 13,443.77
4. Step 4: Simplify right side
   31,213.82x = 629,411,399.71
5. Step 5: Solve for x
   x = 629,411,399.71/31,213.82
6. Step 6: Final answer
   x = 20,164.51