Finding the Fourth Proportional to 9,401.56, 13,033.54 and 8,902.21

Step by Step Solution

1. Step 1: Write the proportion equation
   9,401.56 : 13,033.54 = 8,902.21 : x
2. Step 2: Convert to fraction form
   9,401.56/13,033.54 = 8,902.21/x
3. Step 3: Cross multiply
   9,401.56x = 13,033.54 × 8,902.21
4. Step 4: Simplify right side
   9,401.56x = 116,027,310.12
5. Step 5: Solve for x
   x = 116,027,310.12/9,401.56
6. Step 6: Final answer
   x = 12,341.28