Finding the Fourth Proportional to 9,155.38, 12,622.20 and 7,273.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,155.38 : 12,622.20 = 7,273.21 : x
2. Step 2: Convert to fraction form
   9,155.38/12,622.20 = 7,273.21/x
3. Step 3: Cross multiply
   9,155.38x = 12,622.20 × 7,273.21
4. Step 4: Simplify right side
   9,155.38x = 91,803,848.15
5. Step 5: Solve for x
   x = 91,803,848.15/9,155.38
6. Step 6: Final answer
   x = 10,027.32