Finding the Fourth Proportional to 37,431.56, 56,128.58 and 12,462.82

Step by Step Solution

1. Step 1: Write the proportion equation
   37,431.56 : 56,128.58 = 12,462.82 : x
2. Step 2: Convert to fraction form
   37,431.56/56,128.58 = 12,462.82/x
3. Step 3: Cross multiply
   37,431.56x = 56,128.58 × 12,462.82
4. Step 4: Simplify right side
   37,431.56x = 699,520,389.40
5. Step 5: Solve for x
   x = 699,520,389.40/37,431.56
6. Step 6: Final answer
   x = 18,687.98