Finding the Fourth Proportional to 37,431.32, 56,128.20 and 12,462.56

Step by Step Solution

1. Step 1: Write the proportion equation
   37,431.32 : 56,128.20 = 12,462.56 : x
2. Step 2: Convert to fraction form
   37,431.32/56,128.20 = 12,462.56/x
3. Step 3: Cross multiply
   37,431.32x = 56,128.20 × 12,462.56
4. Step 4: Simplify right side
   37,431.32x = 699,501,060.19
5. Step 5: Solve for x
   x = 699,501,060.19/37,431.32
6. Step 6: Final answer
   x = 18,687.59