Finding the Fourth Proportional to 12,856.13, 17,741.73 and 9,085.94

Step by Step Solution

1. Step 1: Write the proportion equation
   12,856.13 : 17,741.73 = 9,085.94 : x
2. Step 2: Convert to fraction form
   12,856.13/17,741.73 = 9,085.94/x
3. Step 3: Cross multiply
   12,856.13x = 17,741.73 × 9,085.94
4. Step 4: Simplify right side
   12,856.13x = 161,200,205.57
5. Step 5: Solve for x
   x = 161,200,205.57/12,856.13
6. Step 6: Final answer
   x = 12,538.79