Finding the Fourth Proportional to 12,744.21, 17,587.50 and 7,079.39

Step by Step Solution

1. Step 1: Write the proportion equation
   12,744.21 : 17,587.50 = 7,079.39 : x
2. Step 2: Convert to fraction form
   12,744.21/17,587.50 = 7,079.39/x
3. Step 3: Cross multiply
   12,744.21x = 17,587.50 × 7,079.39
4. Step 4: Simplify right side
   12,744.21x = 124,508,758.09
5. Step 5: Solve for x
   x = 124,508,758.09/12,744.21
6. Step 6: Final answer
   x = 9,769.83