Finding the Fourth Proportional to 31,271.94, 46,929.78 and 13,754.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,271.94 : 46,929.78 = 13,754.04 : x
2. Step 2: Convert to fraction form
   31,271.94/46,929.78 = 13,754.04/x
3. Step 3: Cross multiply
   31,271.94x = 46,929.78 × 13,754.04
4. Step 4: Simplify right side
   31,271.94x = 645,474,071.31
5. Step 5: Solve for x
   x = 645,474,071.31/31,271.94
6. Step 6: Final answer
   x = 20,640.68