Finding the Fourth Proportional to 10,650.83, 15,980.63 and 4,412.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,650.83 : 15,980.63 = 4,412.09 : x
2. Step 2: Convert to fraction form
   10,650.83/15,980.63 = 4,412.09/x
3. Step 3: Cross multiply
   10,650.83x = 15,980.63 × 4,412.09
4. Step 4: Simplify right side
   10,650.83x = 70,507,995.71
5. Step 5: Solve for x
   x = 70,507,995.71/10,650.83
6. Step 6: Final answer
   x = 6,619.96