Finding the Fourth Proportional to 9,128.33, 13,626.47 and 8,021.16

Step by Step Solution

1. Step 1: Write the proportion equation
   9,128.33 : 13,626.47 = 8,021.16 : x
2. Step 2: Convert to fraction form
   9,128.33/13,626.47 = 8,021.16/x
3. Step 3: Cross multiply
   9,128.33x = 13,626.47 × 8,021.16
4. Step 4: Simplify right side
   9,128.33x = 109,300,096.11
5. Step 5: Solve for x
   x = 109,300,096.11/9,128.33
6. Step 6: Final answer
   x = 11,973.72