Finding the Fourth Proportional to 21,396.72, 32,100.56 and 8,245.56

Step by Step Solution

1. Step 1: Write the proportion equation
   21,396.72 : 32,100.56 = 8,245.56 : x
2. Step 2: Convert to fraction form
   21,396.72/32,100.56 = 8,245.56/x
3. Step 3: Cross multiply
   21,396.72x = 32,100.56 × 8,245.56
4. Step 4: Simplify right side
   21,396.72x = 264,687,093.51
5. Step 5: Solve for x
   x = 264,687,093.51/21,396.72
6. Step 6: Final answer
   x = 12,370.45