Finding the Fourth Proportional to 30,891, 42,629.82 and 18,326.52

Step by Step Solution

1. Step 1: Write the proportion equation
   30,891 : 42,629.82 = 18,326.52 : x
2. Step 2: Convert to fraction form
   30,891/42,629.82 = 18,326.52/x
3. Step 3: Cross multiply
   30,891x = 42,629.82 × 18,326.52
4. Step 4: Simplify right side
   30,891x = 781,256,248.83
5. Step 5: Solve for x
   x = 781,256,248.83/30,891
6. Step 6: Final answer
   x = 25,290.74