Finding the Fourth Proportional to 21,736.56, 32,598.72 and 8,406.48

Step by Step Solution

1. Step 1: Write the proportion equation
   21,736.56 : 32,598.72 = 8,406.48 : x
2. Step 2: Convert to fraction form
   21,736.56/32,598.72 = 8,406.48/x
3. Step 3: Cross multiply
   21,736.56x = 32,598.72 × 8,406.48
4. Step 4: Simplify right side
   21,736.56x = 274,040,487.71
5. Step 5: Solve for x
   x = 274,040,487.71/21,736.56
6. Step 6: Final answer
   x = 12,607.35