Finding the Fourth Proportional to 37,719.91, 56,578.83 and 12,759.76

Step by Step Solution

1. Step 1: Write the proportion equation
   37,719.91 : 56,578.83 = 12,759.76 : x
2. Step 2: Convert to fraction form
   37,719.91/56,578.83 = 12,759.76/x
3. Step 3: Cross multiply
   37,719.91x = 56,578.83 × 12,759.76
4. Step 4: Simplify right side
   37,719.91x = 721,932,291.88
5. Step 5: Solve for x
   x = 721,932,291.88/37,719.91
6. Step 6: Final answer
   x = 19,139.29