Finding the Fourth Proportional to 12,644.62, 17,446.59 and 7,338.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,644.62 : 17,446.59 = 7,338.52 : x
2. Step 2: Convert to fraction form
   12,644.62/17,446.59 = 7,338.52/x
3. Step 3: Cross multiply
   12,644.62x = 17,446.59 × 7,338.52
4. Step 4: Simplify right side
   12,644.62x = 128,032,149.65
5. Step 5: Solve for x
   x = 128,032,149.65/12,644.62
6. Step 6: Final answer
   x = 10,125.42