Finding the Fourth Proportional to 31,696.37, 47,557.88 and 13,917.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,696.37 : 47,557.88 = 13,917.88 : x
2. Step 2: Convert to fraction form
   31,696.37/47,557.88 = 13,917.88/x
3. Step 3: Cross multiply
   31,696.37x = 47,557.88 × 13,917.88
4. Step 4: Simplify right side
   31,696.37x = 661,904,866.89
5. Step 5: Solve for x
   x = 661,904,866.89/31,696.37
6. Step 6: Final answer
   x = 20,882.67