Finding the Fourth Proportional to 37,074.72, 55,611.90 and 12,131.76

Step by Step Solution

1. Step 1: Write the proportion equation
   37,074.72 : 55,611.90 = 12,131.76 : x
2. Step 2: Convert to fraction form
   37,074.72/55,611.90 = 12,131.76/x
3. Step 3: Cross multiply
   37,074.72x = 55,611.90 × 12,131.76
4. Step 4: Simplify right side
   37,074.72x = 674,670,223.94
5. Step 5: Solve for x
   x = 674,670,223.94/37,074.72
6. Step 6: Final answer
   x = 18,197.58