Finding the Fourth Proportional to 7,072.32, 9,755.49 and 5,085.57

Step by Step Solution

1. Step 1: Write the proportion equation
   7,072.32 : 9,755.49 = 5,085.57 : x
2. Step 2: Convert to fraction form
   7,072.32/9,755.49 = 5,085.57/x
3. Step 3: Cross multiply
   7,072.32x = 9,755.49 × 5,085.57
4. Step 4: Simplify right side
   7,072.32x = 49,612,227.28
5. Step 5: Solve for x
   x = 49,612,227.28/7,072.32
6. Step 6: Final answer
   x = 7,014.99