Finding the Fourth Proportional to 10,826.33, 16,239.56 and 3,430.80

Step by Step Solution

1. Step 1: Write the proportion equation
   10,826.33 : 16,239.56 = 3,430.80 : x
2. Step 2: Convert to fraction form
   10,826.33/16,239.56 = 3,430.80/x
3. Step 3: Cross multiply
   10,826.33x = 16,239.56 × 3,430.80
4. Step 4: Simplify right side
   10,826.33x = 55,714,665.29
5. Step 5: Solve for x
   x = 55,714,665.29/10,826.33
6. Step 6: Final answer
   x = 5,146.22