Finding the Fourth Proportional to 37,815, 56,717.46 and 12,854.04

Step by Step Solution

1. Step 1: Write the proportion equation
   37,815 : 56,717.46 = 12,854.04 : x
2. Step 2: Convert to fraction form
   37,815/56,717.46 = 12,854.04/x
3. Step 3: Cross multiply
   37,815x = 56,717.46 × 12,854.04
4. Step 4: Simplify right side
   37,815x = 729,048,499.54
5. Step 5: Solve for x
   x = 729,048,499.54/37,815
6. Step 6: Final answer
   x = 19,279.35