Finding the Fourth Proportional to 12,681.20, 17,500.92 and 7,091.12

Step by Step Solution

1. Step 1: Write the proportion equation
   12,681.20 : 17,500.92 = 7,091.12 : x
2. Step 2: Convert to fraction form
   12,681.20/17,500.92 = 7,091.12/x
3. Step 3: Cross multiply
   12,681.20x = 17,500.92 × 7,091.12
4. Step 4: Simplify right side
   12,681.20x = 124,101,123.83
5. Step 5: Solve for x
   x = 124,101,123.83/12,681.20
6. Step 6: Final answer
   x = 9,786.23