Finding the Fourth Proportional to 12,743.81, 17,585.83 and 7,078.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.81 : 17,585.83 = 7,078.92 : x
2. Step 2: Convert to fraction form
   12,743.81/17,585.83 = 7,078.92/x
3. Step 3: Cross multiply
   12,743.81x = 17,585.83 × 7,078.92
4. Step 4: Simplify right side
   12,743.81x = 124,488,626.61
5. Step 5: Solve for x
   x = 124,488,626.61/12,743.81
6. Step 6: Final answer
   x = 9,768.56