Finding the Fourth Proportional to 10,341.47, 14,285.77 and 9,222.05

Step by Step Solution

1. Step 1: Write the proportion equation
   10,341.47 : 14,285.77 = 9,222.05 : x
2. Step 2: Convert to fraction form
   10,341.47/14,285.77 = 9,222.05/x
3. Step 3: Cross multiply
   10,341.47x = 14,285.77 × 9,222.05
4. Step 4: Simplify right side
   10,341.47x = 131,744,097.89
5. Step 5: Solve for x
   x = 131,744,097.89/10,341.47
6. Step 6: Final answer
   x = 12,739.39