Finding the Fourth Proportional to 5,134.37, 7,085.40 and 2,776.50

Step by Step Solution

1. Step 1: Write the proportion equation
   5,134.37 : 7,085.40 = 2,776.50 : x
2. Step 2: Convert to fraction form
   5,134.37/7,085.40 = 2,776.50/x
3. Step 3: Cross multiply
   5,134.37x = 7,085.40 × 2,776.50
4. Step 4: Simplify right side
   5,134.37x = 19,672,613.10
5. Step 5: Solve for x
   x = 19,672,613.10/5,134.37
6. Step 6: Final answer
   x = 3,831.56