Finding the Fourth Proportional to 9,112.86, 12,576.20 and 5,134.41

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.86 : 12,576.20 = 5,134.41 : x
2. Step 2: Convert to fraction form
   9,112.86/12,576.20 = 5,134.41/x
3. Step 3: Cross multiply
   9,112.86x = 12,576.20 × 5,134.41
4. Step 4: Simplify right side
   9,112.86x = 64,571,341.37
5. Step 5: Solve for x
   x = 64,571,341.37/9,112.86
6. Step 6: Final answer
   x = 7,085.74