Finding the Fourth Proportional to 13,561.01, 18,716.42 and 9,308.56

Step by Step Solution

1. Step 1: Write the proportion equation
   13,561.01 : 18,716.42 = 9,308.56 : x
2. Step 2: Convert to fraction form
   13,561.01/18,716.42 = 9,308.56/x
3. Step 3: Cross multiply
   13,561.01x = 18,716.42 × 9,308.56
4. Step 4: Simplify right side
   13,561.01x = 174,222,872.01
5. Step 5: Solve for x
   x = 174,222,872.01/13,561.01
6. Step 6: Final answer
   x = 12,847.34