Finding the Fourth Proportional to 31,840.72, 43,940.39 and 19,911.04

Step by Step Solution

1. Step 1: Write the proportion equation
   31,840.72 : 43,940.39 = 19,911.04 : x
2. Step 2: Convert to fraction form
   31,840.72/43,940.39 = 19,911.04/x
3. Step 3: Cross multiply
   31,840.72x = 43,940.39 × 19,911.04
4. Step 4: Simplify right side
   31,840.72x = 874,898,653.50
5. Step 5: Solve for x
   x = 874,898,653.50/31,840.72
6. Step 6: Final answer
   x = 27,477.35