Finding the Fourth Proportional to 21,799.62, 30,082.59 and 12,367.98

Step by Step Solution

1. Step 1: Write the proportion equation
   21,799.62 : 30,082.59 = 12,367.98 : x
2. Step 2: Convert to fraction form
   21,799.62/30,082.59 = 12,367.98/x
3. Step 3: Cross multiply
   21,799.62x = 30,082.59 × 12,367.98
4. Step 4: Simplify right side
   21,799.62x = 372,060,871.47
5. Step 5: Solve for x
   x = 372,060,871.47/21,799.62
6. Step 6: Final answer
   x = 17,067.31