Finding the Fourth Proportional to 7,085.67, 9,781.71 and 5,488.74

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085.67 : 9,781.71 = 5,488.74 : x
2. Step 2: Convert to fraction form
   7,085.67/9,781.71 = 5,488.74/x
3. Step 3: Cross multiply
   7,085.67x = 9,781.71 × 5,488.74
4. Step 4: Simplify right side
   7,085.67x = 53,689,262.95
5. Step 5: Solve for x
   x = 53,689,262.95/7,085.67
6. Step 6: Final answer
   x = 7,577.16