Finding the Fourth Proportional to 12,743.10, 17,585.60 and 7,436.90

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.10 : 17,585.60 = 7,436.90 : x
2. Step 2: Convert to fraction form
   12,743.10/17,585.60 = 7,436.90/x
3. Step 3: Cross multiply
   12,743.10x = 17,585.60 × 7,436.90
4. Step 4: Simplify right side
   12,743.10x = 130,782,355.42
5. Step 5: Solve for x
   x = 130,782,355.42/12,743.10
6. Step 6: Final answer
   x = 10,262.99