Finding the Fourth Proportional to 21,436.32, 32,159.56 and 8,949.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,436.32 : 32,159.56 = 8,949.42 : x
2. Step 2: Convert to fraction form
   21,436.32/32,159.56 = 8,949.42/x
3. Step 3: Cross multiply
   21,436.32x = 32,159.56 × 8,949.42
4. Step 4: Simplify right side
   21,436.32x = 287,809,409.46
5. Step 5: Solve for x
   x = 287,809,409.46/21,436.32
6. Step 6: Final answer
   x = 13,426.25