Finding the Fourth Proportional to 8,897.72, 12,273.32 and 7,133.54

Step by Step Solution

1. Step 1: Write the proportion equation
   8,897.72 : 12,273.32 = 7,133.54 : x
2. Step 2: Convert to fraction form
   8,897.72/12,273.32 = 7,133.54/x
3. Step 3: Cross multiply
   8,897.72x = 12,273.32 × 7,133.54
4. Step 4: Simplify right side
   8,897.72x = 87,552,219.15
5. Step 5: Solve for x
   x = 87,552,219.15/8,897.72
6. Step 6: Final answer
   x = 9,839.85