Finding the Fourth Proportional to 37,446.81, 56,151.42 and 12,478.08

Step by Step Solution

1. Step 1: Write the proportion equation
   37,446.81 : 56,151.42 = 12,478.08 : x
2. Step 2: Convert to fraction form
   37,446.81/56,151.42 = 12,478.08/x
3. Step 3: Cross multiply
   37,446.81x = 56,151.42 × 12,478.08
4. Step 4: Simplify right side
   37,446.81x = 700,661,910.87
5. Step 5: Solve for x
   x = 700,661,910.87/37,446.81
6. Step 6: Final answer
   x = 18,710.86