Finding the Fourth Proportional to 21,967.94, 30,310.52 and 12,408.02

Step by Step Solution

1. Step 1: Write the proportion equation
   21,967.94 : 30,310.52 = 12,408.02 : x
2. Step 2: Convert to fraction form
   21,967.94/30,310.52 = 12,408.02/x
3. Step 3: Cross multiply
   21,967.94x = 30,310.52 × 12,408.02
4. Step 4: Simplify right side
   21,967.94x = 376,093,538.37
5. Step 5: Solve for x
   x = 376,093,538.37/21,967.94
6. Step 6: Final answer
   x = 17,120.11