Finding the Fourth Proportional to 9,398.10, 12,960.42 and 5,620.65

Step by Step Solution

1. Step 1: Write the proportion equation
   9,398.10 : 12,960.42 = 5,620.65 : x
2. Step 2: Convert to fraction form
   9,398.10/12,960.42 = 5,620.65/x
3. Step 3: Cross multiply
   9,398.10x = 12,960.42 × 5,620.65
4. Step 4: Simplify right side
   9,398.10x = 72,845,984.67
5. Step 5: Solve for x
   x = 72,845,984.67/9,398.10
6. Step 6: Final answer
   x = 7,751.14