Finding the Fourth Proportional to 7,661.15, 10,576.41 and 5,156.42

Step by Step Solution

1. Step 1: Write the proportion equation
   7,661.15 : 10,576.41 = 5,156.42 : x
2. Step 2: Convert to fraction form
   7,661.15/10,576.41 = 5,156.42/x
3. Step 3: Cross multiply
   7,661.15x = 10,576.41 × 5,156.42
4. Step 4: Simplify right side
   7,661.15x = 54,536,359.17
5. Step 5: Solve for x
   x = 54,536,359.17/7,661.15
6. Step 6: Final answer
   x = 7,118.57