Finding the Fourth Proportional to 12,641.35, 17,442.39 and 7,335.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,641.35 : 17,442.39 = 7,335.49 : x
2. Step 2: Convert to fraction form
   12,641.35/17,442.39 = 7,335.49/x
3. Step 3: Cross multiply
   12,641.35x = 17,442.39 × 7,335.49
4. Step 4: Simplify right side
   12,641.35x = 127,948,477.42
5. Step 5: Solve for x
   x = 127,948,477.42/12,641.35
6. Step 6: Final answer
   x = 10,121.43