Finding the Fourth Proportional to 16,442.16, 24,680.79 and 7,086.80

Step by Step Solution

1. Step 1: Write the proportion equation
   16,442.16 : 24,680.79 = 7,086.80 : x
2. Step 2: Convert to fraction form
   16,442.16/24,680.79 = 7,086.80/x
3. Step 3: Cross multiply
   16,442.16x = 24,680.79 × 7,086.80
4. Step 4: Simplify right side
   16,442.16x = 174,907,699.17
5. Step 5: Solve for x
   x = 174,907,699.17/16,442.16
6. Step 6: Final answer
   x = 10,637.76