Finding the Fourth Proportional to 9,144.09, 12,620.21 and 7,370.19

Step by Step Solution

1. Step 1: Write the proportion equation
   9,144.09 : 12,620.21 = 7,370.19 : x
2. Step 2: Convert to fraction form
   9,144.09/12,620.21 = 7,370.19/x
3. Step 3: Cross multiply
   9,144.09x = 12,620.21 × 7,370.19
4. Step 4: Simplify right side
   9,144.09x = 93,013,308.69
5. Step 5: Solve for x
   x = 93,013,308.69/9,144.09
6. Step 6: Final answer
   x = 10,171.96