Finding the Fourth Proportional to 21,866.58, 30,174.89 and 13,382.82

Step by Step Solution

1. Step 1: Write the proportion equation
   21,866.58 : 30,174.89 = 13,382.82 : x
2. Step 2: Convert to fraction form
   21,866.58/30,174.89 = 13,382.82/x
3. Step 3: Cross multiply
   21,866.58x = 30,174.89 × 13,382.82
4. Step 4: Simplify right side
   21,866.58x = 403,825,054.48
5. Step 5: Solve for x
   x = 403,825,054.48/21,866.58
6. Step 6: Final answer
   x = 18,467.68