Finding the Fourth Proportional to 5,127.76, 7,688.34 and 3,370.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,127.76 : 7,688.34 = 3,370.72 : x
2. Step 2: Convert to fraction form
   5,127.76/7,688.34 = 3,370.72/x
3. Step 3: Cross multiply
   5,127.76x = 7,688.34 × 3,370.72
4. Step 4: Simplify right side
   5,127.76x = 25,915,241.40
5. Step 5: Solve for x
   x = 25,915,241.40/5,127.76
6. Step 6: Final answer
   x = 5,053.91