Finding the Fourth Proportional to 12,743.99, 17,586.83 and 7,437.78

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.99 : 17,586.83 = 7,437.78 : x
2. Step 2: Convert to fraction form
   12,743.99/17,586.83 = 7,437.78/x
3. Step 3: Cross multiply
   12,743.99x = 17,586.83 × 7,437.78
4. Step 4: Simplify right side
   12,743.99x = 130,806,935.25
5. Step 5: Solve for x
   x = 130,806,935.25/12,743.99
6. Step 6: Final answer
   x = 10,264.20