Finding the Fourth Proportional to 9,392.14, 12,961.18 and 5,085.28

Step by Step Solution

1. Step 1: Write the proportion equation
   9,392.14 : 12,961.18 = 5,085.28 : x
2. Step 2: Convert to fraction form
   9,392.14/12,961.18 = 5,085.28/x
3. Step 3: Cross multiply
   9,392.14x = 12,961.18 × 5,085.28
4. Step 4: Simplify right side
   9,392.14x = 65,911,139.20
5. Step 5: Solve for x
   x = 65,911,139.20/9,392.14
6. Step 6: Final answer
   x = 7,017.69