Finding the Fourth Proportional to 31,131.97, 46,692.93 and 8,940.30

Step by Step Solution

1. Step 1: Write the proportion equation
   31,131.97 : 46,692.93 = 8,940.30 : x
2. Step 2: Convert to fraction form
   31,131.97/46,692.93 = 8,940.30/x
3. Step 3: Cross multiply
   31,131.97x = 46,692.93 × 8,940.30
4. Step 4: Simplify right side
   31,131.97x = 417,448,766.69
5. Step 5: Solve for x
   x = 417,448,766.69/31,131.97
6. Step 6: Final answer
   x = 13,409.01