Finding the Fourth Proportional to 9,112.75, 12,573.43 and 5,133.07

Step by Step Solution

1. Step 1: Write the proportion equation
   9,112.75 : 12,573.43 = 5,133.07 : x
2. Step 2: Convert to fraction form
   9,112.75/12,573.43 = 5,133.07/x
3. Step 3: Cross multiply
   9,112.75x = 12,573.43 × 5,133.07
4. Step 4: Simplify right side
   9,112.75x = 64,540,296.33
5. Step 5: Solve for x
   x = 64,540,296.33/9,112.75
6. Step 6: Final answer
   x = 7,082.42