Finding the Fourth Proportional to 21,380.25, 32,062.14 and 8,906.16

Step by Step Solution

1. Step 1: Write the proportion equation
   21,380.25 : 32,062.14 = 8,906.16 : x
2. Step 2: Convert to fraction form
   21,380.25/32,062.14 = 8,906.16/x
3. Step 3: Cross multiply
   21,380.25x = 32,062.14 × 8,906.16
4. Step 4: Simplify right side
   21,380.25x = 285,550,548.78
5. Step 5: Solve for x
   x = 285,550,548.78/21,380.25
6. Step 6: Final answer
   x = 13,355.81