Finding the Fourth Proportional to 9,112.62, 12,575.67 and 5,133.87

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.62 : 12,575.67 = 5,133.87 : x
2. Step 2: Convert to fraction form
   9,112.62/12,575.67 = 5,133.87/x
3. Step 3: Cross multiply
   9,112.62x = 12,575.67 × 5,133.87
4. Step 4: Simplify right side
   9,112.62x = 64,561,854.94
5. Step 5: Solve for x
   x = 64,561,854.94/9,112.62
6. Step 6: Final answer
   x = 7,084.88