Finding the Fourth Proportional to 12,488.90, 17,236.49 and 7,453.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.90 : 17,236.49 = 7,453.33 : x
2. Step 2: Convert to fraction form
   12,488.90/17,236.49 = 7,453.33/x
3. Step 3: Cross multiply
   12,488.90x = 17,236.49 × 7,453.33
4. Step 4: Simplify right side
   12,488.90x = 128,469,167.65
5. Step 5: Solve for x
   x = 128,469,167.65/12,488.90
6. Step 6: Final answer
   x = 10,286.67