Finding the Fourth Proportional to 8,983.96, 12,403.92 and 5,628.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,983.96 : 12,403.92 = 5,628.12 : x
2. Step 2: Convert to fraction form
   8,983.96/12,403.92 = 5,628.12/x
3. Step 3: Cross multiply
   8,983.96x = 12,403.92 × 5,628.12
4. Step 4: Simplify right side
   8,983.96x = 69,810,750.23
5. Step 5: Solve for x
   x = 69,810,750.23/8,983.96
6. Step 6: Final answer
   x = 7,770.60