Finding the Fourth Proportional to 5,076.60, 7,609.71 and 2,880.69

Step by Step Solution

1. Step 1: Write the proportion equation
   5,076.60 : 7,609.71 = 2,880.69 : x
2. Step 2: Convert to fraction form
   5,076.60/7,609.71 = 2,880.69/x
3. Step 3: Cross multiply
   5,076.60x = 7,609.71 × 2,880.69
4. Step 4: Simplify right side
   5,076.60x = 21,921,215.50
5. Step 5: Solve for x
   x = 21,921,215.50/5,076.60
6. Step 6: Final answer
   x = 4,318.09