Finding the Fourth Proportional to 21,455.10, 32,189.94 and 13,548.42

Step by Step Solution

1. Step 1: Write the proportion equation
   21,455.10 : 32,189.94 = 13,548.42 : x
2. Step 2: Convert to fraction form
   21,455.10/32,189.94 = 13,548.42/x
3. Step 3: Cross multiply
   21,455.10x = 32,189.94 × 13,548.42
4. Step 4: Simplify right side
   21,455.10x = 436,122,826.89
5. Step 5: Solve for x
   x = 436,122,826.89/21,455.10
6. Step 6: Final answer
   x = 20,327.23