Finding the Fourth Proportional to 5,185.48, 7,771.72 and 4,085.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,185.48 : 7,771.72 = 4,085.50 : x
2. Step 2: Convert to fraction form
   5,185.48/7,771.72 = 4,085.50/x
3. Step 3: Cross multiply
   5,185.48x = 7,771.72 × 4,085.50
4. Step 4: Simplify right side
   5,185.48x = 31,751,362.06
5. Step 5: Solve for x
   x = 31,751,362.06/5,185.48
6. Step 6: Final answer
   x = 6,123.13