Finding the Fourth Proportional to 5,443.57, 7,511.70 and 3,085.12

Step by Step Solution

1. Step 1: Write the proportion equation
   5,443.57 : 7,511.70 = 3,085.12 : x
2. Step 2: Convert to fraction form
   5,443.57/7,511.70 = 3,085.12/x
3. Step 3: Cross multiply
   5,443.57x = 7,511.70 × 3,085.12
4. Step 4: Simplify right side
   5,443.57x = 23,174,495.90
5. Step 5: Solve for x
   x = 23,174,495.90/5,443.57
6. Step 6: Final answer
   x = 4,257.22