Finding the Fourth Proportional to 12,576.86, 17,357.57 and 7,543.85

Step by Step Solution

1. Step 1: Write the proportion equation
   12,576.86 : 17,357.57 = 7,543.85 : x
2. Step 2: Convert to fraction form
   12,576.86/17,357.57 = 7,543.85/x
3. Step 3: Cross multiply
   12,576.86x = 17,357.57 × 7,543.85
4. Step 4: Simplify right side
   12,576.86x = 130,942,904.44
5. Step 5: Solve for x
   x = 130,942,904.44/12,576.86
6. Step 6: Final answer
   x = 10,411.41