Finding the Fourth Proportional to 12,488.87, 17,235.41 and 7,183.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,488.87 : 17,235.41 = 7,183.57 : x
2. Step 2: Convert to fraction form
   12,488.87/17,235.41 = 7,183.57/x
3. Step 3: Cross multiply
   12,488.87x = 17,235.41 × 7,183.57
4. Step 4: Simplify right side
   12,488.87x = 123,811,774.21
5. Step 5: Solve for x
   x = 123,811,774.21/12,488.87
6. Step 6: Final answer
   x = 9,913.77