Finding the Fourth Proportional to 12,931.72, 19,396.14 and 3,697

Step by Step Solution

1. Step 1: Write the proportion equation
   12,931.72 : 19,396.14 = 3,697 : x
2. Step 2: Convert to fraction form
   12,931.72/19,396.14 = 3,697/x
3. Step 3: Cross multiply
   12,931.72x = 19,396.14 × 3,697
4. Step 4: Simplify right side
   12,931.72x = 71,707,529.58
5. Step 5: Solve for x
   x = 71,707,529.58/12,931.72
6. Step 6: Final answer
   x = 5,545.09