Finding the Fourth Proportional to 9,072.72, 12,532.68 and 7,108.08

Step by Step Solution

1. Step 1: Write the proportion equation
   9,072.72 : 12,532.68 = 7,108.08 : x
2. Step 2: Convert to fraction form
   9,072.72/12,532.68 = 7,108.08/x
3. Step 3: Cross multiply
   9,072.72x = 12,532.68 × 7,108.08
4. Step 4: Simplify right side
   9,072.72x = 89,083,292.05
5. Step 5: Solve for x
   x = 89,083,292.05/9,072.72
6. Step 6: Final answer
   x = 9,818.81