Finding the Fourth Proportional to 12,641.85, 17,449.22 and 7,338.38

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.85 : 17,449.22 = 7,338.38 : x
2. Step 2: Convert to fraction form
   12,641.85/17,449.22 = 7,338.38/x
3. Step 3: Cross multiply
   12,641.85x = 17,449.22 × 7,338.38
4. Step 4: Simplify right side
   12,641.85x = 128,048,938.16
5. Step 5: Solve for x
   x = 128,048,938.16/12,641.85
6. Step 6: Final answer
   x = 10,128.97