Finding the Fourth Proportional to 30,716.82, 42,385.41 and 19,381.95

Step by Step Solution

1. Step 1: Write the proportion equation
   30,716.82 : 42,385.41 = 19,381.95 : x
2. Step 2: Convert to fraction form
   30,716.82/42,385.41 = 19,381.95/x
3. Step 3: Cross multiply
   30,716.82x = 42,385.41 × 19,381.95
4. Step 4: Simplify right side
   30,716.82x = 821,511,897.35
5. Step 5: Solve for x
   x = 821,511,897.35/30,716.82
6. Step 6: Final answer
   x = 26,744.69