Finding the Fourth Proportional to 37,839.05, 56,742.17 and 12,872.39

Step by Step Solution

1. Step 1: Write the proportion equation
   37,839.05 : 56,742.17 = 12,872.39 : x
2. Step 2: Convert to fraction form
   37,839.05/56,742.17 = 12,872.39/x
3. Step 3: Cross multiply
   37,839.05x = 56,742.17 × 12,872.39
4. Step 4: Simplify right side
   37,839.05x = 730,407,544.78
5. Step 5: Solve for x
   x = 730,407,544.78/37,839.05
6. Step 6: Final answer
   x = 19,303.01