Finding the Fourth Proportional to 8,190.32, 12,222.09 and 7,305.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,190.32 : 12,222.09 = 7,305.69 : x
2. Step 2: Convert to fraction form
   8,190.32/12,222.09 = 7,305.69/x
3. Step 3: Cross multiply
   8,190.32x = 12,222.09 × 7,305.69
4. Step 4: Simplify right side
   8,190.32x = 89,290,846.52
5. Step 5: Solve for x
   x = 89,290,846.52/8,190.32
6. Step 6: Final answer
   x = 10,902.00