Finding the Fourth Proportional to 21,880.37, 30,195.50 and 13,382.33

Step by Step Solution

1. Step 1: Write the proportion equation
   21,880.37 : 30,195.50 = 13,382.33 : x
2. Step 2: Convert to fraction form
   21,880.37/30,195.50 = 13,382.33/x
3. Step 3: Cross multiply
   21,880.37x = 30,195.50 × 13,382.33
4. Step 4: Simplify right side
   21,880.37x = 404,086,264.67
5. Step 5: Solve for x
   x = 404,086,264.67/21,880.37
6. Step 6: Final answer
   x = 18,467.99