Finding the Fourth Proportional to 21,847.33, 30,151.88 and 12,417.31

Step by Step Solution

1. Step 1: Write the proportion equation
   21,847.33 : 30,151.88 = 12,417.31 : x
2. Step 2: Convert to fraction form
   21,847.33/30,151.88 = 12,417.31/x
3. Step 3: Cross multiply
   21,847.33x = 30,151.88 × 12,417.31
4. Step 4: Simplify right side
   21,847.33x = 374,405,241.04
5. Step 5: Solve for x
   x = 374,405,241.04/21,847.33
6. Step 6: Final answer
   x = 17,137.35