Finding the Fourth Proportional to 7,085.92, 10,630.12 and 2,923.60

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085.92 : 10,630.12 = 2,923.60 : x
2. Step 2: Convert to fraction form
   7,085.92/10,630.12 = 2,923.60/x
3. Step 3: Cross multiply
   7,085.92x = 10,630.12 × 2,923.60
4. Step 4: Simplify right side
   7,085.92x = 31,078,218.83
5. Step 5: Solve for x
   x = 31,078,218.83/7,085.92
6. Step 6: Final answer
   x = 4,385.91