Finding the Fourth Proportional to 31,969.83, 47,964.60 and 13,258.56

Step by Step Solution

1. Step 1: Write the proportion equation
   31,969.83 : 47,964.60 = 13,258.56 : x
2. Step 2: Convert to fraction form
   31,969.83/47,964.60 = 13,258.56/x
3. Step 3: Cross multiply
   31,969.83x = 47,964.60 × 13,258.56
4. Step 4: Simplify right side
   31,969.83x = 635,941,526.98
5. Step 5: Solve for x
   x = 635,941,526.98/31,969.83
6. Step 6: Final answer
   x = 19,891.93