Finding the Fourth Proportional to 31,949.37, 47,926.37 and 12,964.89

Step by Step Solution

1. Step 1: Write the proportion equation
   31,949.37 : 47,926.37 = 12,964.89 : x
2. Step 2: Convert to fraction form
   31,949.37/47,926.37 = 12,964.89/x
3. Step 3: Cross multiply
   31,949.37x = 47,926.37 × 12,964.89
4. Step 4: Simplify right side
   31,949.37x = 621,359,810.69
5. Step 5: Solve for x
   x = 621,359,810.69/31,949.37
6. Step 6: Final answer
   x = 19,448.27