Finding the Fourth Proportional to 21,361.89, 32,054.33 and 8,890.53

Step by Step Solution

1. Step 1: Write the proportion equation
   21,361.89 : 32,054.33 = 8,890.53 : x
2. Step 2: Convert to fraction form
   21,361.89/32,054.33 = 8,890.53/x
3. Step 3: Cross multiply
   21,361.89x = 32,054.33 × 8,890.53
4. Step 4: Simplify right side
   21,361.89x = 284,979,884.52
5. Step 5: Solve for x
   x = 284,979,884.52/21,361.89
6. Step 6: Final answer
   x = 13,340.57