Finding the Fourth Proportional to 9,222.05, 13,822.61 and 8,109.32

Step by Step Solution

1. Step 1: Write the proportion equation
   9,222.05 : 13,822.61 = 8,109.32 : x
2. Step 2: Convert to fraction form
   9,222.05/13,822.61 = 8,109.32/x
3. Step 3: Cross multiply
   9,222.05x = 13,822.61 × 8,109.32
4. Step 4: Simplify right side
   9,222.05x = 112,091,858.07
5. Step 5: Solve for x
   x = 112,091,858.07/9,222.05
6. Step 6: Final answer
   x = 12,154.76