Finding the Fourth Proportional to 5,077.05, 7,615.56 and 2,153.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,077.05 : 7,615.56 = 2,153.31 : x
2. Step 2: Convert to fraction form
   5,077.05/7,615.56 = 2,153.31/x
3. Step 3: Cross multiply
   5,077.05x = 7,615.56 × 2,153.31
4. Step 4: Simplify right side
   5,077.05x = 16,398,661.50
5. Step 5: Solve for x
   x = 16,398,661.50/5,077.05
6. Step 6: Final answer
   x = 3,229.96