Finding the Fourth Proportional to 5,154.76, 7,764.55 and 5,086.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,154.76 : 7,764.55 = 5,086.72 : x
2. Step 2: Convert to fraction form
   5,154.76/7,764.55 = 5,086.72/x
3. Step 3: Cross multiply
   5,154.76x = 7,764.55 × 5,086.72
4. Step 4: Simplify right side
   5,154.76x = 39,496,091.78
5. Step 5: Solve for x
   x = 39,496,091.78/5,154.76
6. Step 6: Final answer
   x = 7,662.06