Finding the Fourth Proportional to 9,021.56, 12,383.47 and 8,004.61

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.56 : 12,383.47 = 8,004.61 : x
2. Step 2: Convert to fraction form
   9,021.56/12,383.47 = 8,004.61/x
3. Step 3: Cross multiply
   9,021.56x = 12,383.47 × 8,004.61
4. Step 4: Simplify right side
   9,021.56x = 99,124,785.88
5. Step 5: Solve for x
   x = 99,124,785.88/9,021.56
6. Step 6: Final answer
   x = 10,987.54