Finding the Fourth Proportional to 37,020.72, 55,531.14 and 12,396.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,020.72 : 55,531.14 = 12,396.72 : x
2. Step 2: Convert to fraction form
   37,020.72/55,531.14 = 12,396.72/x
3. Step 3: Cross multiply
   37,020.72x = 55,531.14 × 12,396.72
4. Step 4: Simplify right side
   37,020.72x = 688,403,993.86
5. Step 5: Solve for x
   x = 688,403,993.86/37,020.72
6. Step 6: Final answer
   x = 18,595.10