Finding the Fourth Proportional to 7,443.08, 10,271.15 and 4,085.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,443.08 : 10,271.15 = 4,085.78 : x
2. Step 2: Convert to fraction form
   7,443.08/10,271.15 = 4,085.78/x
3. Step 3: Cross multiply
   7,443.08x = 10,271.15 × 4,085.78
4. Step 4: Simplify right side
   7,443.08x = 41,965,587.46
5. Step 5: Solve for x
   x = 41,965,587.46/7,443.08
6. Step 6: Final answer
   x = 5,638.21