Finding the Fourth Proportional to 10,783, 16,162.20 and 5,241.68

Step by Step Solution

1. Step 1: Write the proportion equation
   10,783 : 16,162.20 = 5,241.68 : x
2. Step 2: Convert to fraction form
   10,783/16,162.20 = 5,241.68/x
3. Step 3: Cross multiply
   10,783x = 16,162.20 × 5,241.68
4. Step 4: Simplify right side
   10,783x = 84,717,080.50
5. Step 5: Solve for x
   x = 84,717,080.50/10,783
6. Step 6: Final answer
   x = 7,856.54