Finding the Fourth Proportional to 12,673.76, 17,491.44 and 7,085.92

Step by Step Solution

1. Step 1: Write the proportion equation
   12,673.76 : 17,491.44 = 7,085.92 : x
2. Step 2: Convert to fraction form
   12,673.76/17,491.44 = 7,085.92/x
3. Step 3: Cross multiply
   12,673.76x = 17,491.44 × 7,085.92
4. Step 4: Simplify right side
   12,673.76x = 123,942,944.52
5. Step 5: Solve for x
   x = 123,942,944.52/12,673.76
6. Step 6: Final answer
   x = 9,779.49