Finding the Fourth Proportional to 12,731.31, 19,097.64 and 3,371.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,731.31 : 19,097.64 = 3,371.76 : x
2. Step 2: Convert to fraction form
   12,731.31/19,097.64 = 3,371.76/x
3. Step 3: Cross multiply
   12,731.31x = 19,097.64 × 3,371.76
4. Step 4: Simplify right side
   12,731.31x = 64,392,658.65
5. Step 5: Solve for x
   x = 64,392,658.65/12,731.31
6. Step 6: Final answer
   x = 5,057.82