Finding the Fourth Proportional to 31,498.44, 47,253.42 and 13,031.88

Step by Step Solution

1. Step 1: Write the proportion equation
   31,498.44 : 47,253.42 = 13,031.88 : x
2. Step 2: Convert to fraction form
   31,498.44/47,253.42 = 13,031.88/x
3. Step 3: Cross multiply
   31,498.44x = 47,253.42 × 13,031.88
4. Step 4: Simplify right side
   31,498.44x = 615,800,899.03
5. Step 5: Solve for x
   x = 615,800,899.03/31,498.44
6. Step 6: Final answer
   x = 19,550.20