Finding the Fourth Proportional to 10,961.22, 16,453.46 and 8,906.03

Step by Step Solution

1. Step 1: Write the proportion equation
   10,961.22 : 16,453.46 = 8,906.03 : x
2. Step 2: Convert to fraction form
   10,961.22/16,453.46 = 8,906.03/x
3. Step 3: Cross multiply
   10,961.22x = 16,453.46 × 8,906.03
4. Step 4: Simplify right side
   10,961.22x = 146,535,052.52
5. Step 5: Solve for x
   x = 146,535,052.52/10,961.22
6. Step 6: Final answer
   x = 13,368.49