Finding the Fourth Proportional to 30,726.71, 42,406.04 and 18,797.98

Step by Step Solution

1. Step 1: Write the proportion equation
   30,726.71 : 42,406.04 = 18,797.98 : x
2. Step 2: Convert to fraction form
   30,726.71/42,406.04 = 18,797.98/x
3. Step 3: Cross multiply
   30,726.71x = 42,406.04 × 18,797.98
4. Step 4: Simplify right side
   30,726.71x = 797,147,891.80
5. Step 5: Solve for x
   x = 797,147,891.80/30,726.71
6. Step 6: Final answer
   x = 25,943.16