Finding the Fourth Proportional to 12,391.08, 17,098.83 and 7,085.13

Step by Step Solution

1. Step 1: Write the proportion equation
   12,391.08 : 17,098.83 = 7,085.13 : x
2. Step 2: Convert to fraction form
   12,391.08/17,098.83 = 7,085.13/x
3. Step 3: Cross multiply
   12,391.08x = 17,098.83 × 7,085.13
4. Step 4: Simplify right side
   12,391.08x = 121,147,433.40
5. Step 5: Solve for x
   x = 121,147,433.40/12,391.08
6. Step 6: Final answer
   x = 9,776.99