Finding the Fourth Proportional to 9,292.72, 12,821.46 and 5,512.74

Step by Step Solution

1. Step 1: Write the proportion equation
   9,292.72 : 12,821.46 = 5,512.74 : x
2. Step 2: Convert to fraction form
   9,292.72/12,821.46 = 5,512.74/x
3. Step 3: Cross multiply
   9,292.72x = 12,821.46 × 5,512.74
4. Step 4: Simplify right side
   9,292.72x = 70,681,375.40
5. Step 5: Solve for x
   x = 70,681,375.40/9,292.72
6. Step 6: Final answer
   x = 7,606.10