Finding the Fourth Proportional to 30,491.39, 42,082.89 and 19,162.43

Step by Step Solution

1. Step 1: Write the proportion equation
   30,491.39 : 42,082.89 = 19,162.43 : x
2. Step 2: Convert to fraction form
   30,491.39/42,082.89 = 19,162.43/x
3. Step 3: Cross multiply
   30,491.39x = 42,082.89 × 19,162.43
4. Step 4: Simplify right side
   30,491.39x = 806,410,223.41
5. Step 5: Solve for x
   x = 806,410,223.41/30,491.39
6. Step 6: Final answer
   x = 26,447.15