Finding the Fourth Proportional to 31,738.29, 47,613.46 and 12,764.38

Step by Step Solution

1. Step 1: Write the proportion equation
   31,738.29 : 47,613.46 = 12,764.38 : x
2. Step 2: Convert to fraction form
   31,738.29/47,613.46 = 12,764.38/x
3. Step 3: Cross multiply
   31,738.29x = 47,613.46 × 12,764.38
4. Step 4: Simplify right side
   31,738.29x = 607,756,296.55
5. Step 5: Solve for x
   x = 607,756,296.55/31,738.29
6. Step 6: Final answer
   x = 19,148.99