Finding the Fourth Proportional to 7,085.98, 9,785.91 and 5,314.78

Step by Step Solution

1. Step 1: Write the proportion equation
   7,085.98 : 9,785.91 = 5,314.78 : x
2. Step 2: Convert to fraction form
   7,085.98/9,785.91 = 5,314.78/x
3. Step 3: Cross multiply
   7,085.98x = 9,785.91 × 5,314.78
4. Step 4: Simplify right side
   7,085.98x = 52,009,958.75
5. Step 5: Solve for x
   x = 52,009,958.75/7,085.98
6. Step 6: Final answer
   x = 7,339.84