Finding the Fourth Proportional to 12,743.10, 17,589.16 and 7,707.34

Step by Step Solution

1. Step 1: Write the proportion equation
   12,743.10 : 17,589.16 = 7,707.34 : x
2. Step 2: Convert to fraction form
   12,743.10/17,589.16 = 7,707.34/x
3. Step 3: Cross multiply
   12,743.10x = 17,589.16 × 7,707.34
4. Step 4: Simplify right side
   12,743.10x = 135,565,636.43
5. Step 5: Solve for x
   x = 135,565,636.43/12,743.10
6. Step 6: Final answer
   x = 10,638.36