Finding the Fourth Proportional to 9,128.56, 13,692.72 and 2,203

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.56 : 13,692.72 = 2,203 : x
2. Step 2: Convert to fraction form
   9,128.56/13,692.72 = 2,203/x
3. Step 3: Cross multiply
   9,128.56x = 13,692.72 × 2,203
4. Step 4: Simplify right side
   9,128.56x = 30,165,062.16
5. Step 5: Solve for x
   x = 30,165,062.16/9,128.56
6. Step 6: Final answer
   x = 3,304.47