Finding the Fourth Proportional to 31,339.12, 47,022.72 and 17,112.28

Step by Step Solution

1. Step 1: Write the proportion equation
   31,339.12 : 47,022.72 = 17,112.28 : x
2. Step 2: Convert to fraction form
   31,339.12/47,022.72 = 17,112.28/x
3. Step 3: Cross multiply
   31,339.12x = 47,022.72 × 17,112.28
4. Step 4: Simplify right side
   31,339.12x = 804,665,951.00
5. Step 5: Solve for x
   x = 804,665,951.00/31,339.12
6. Step 6: Final answer
   x = 25,676.09