Finding the Fourth Proportional to 16,978.68, 25,441.98 and 7,112.56

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.68 : 25,441.98 = 7,112.56 : x
2. Step 2: Convert to fraction form
   16,978.68/25,441.98 = 7,112.56/x
3. Step 3: Cross multiply
   16,978.68x = 25,441.98 × 7,112.56
4. Step 4: Simplify right side
   16,978.68x = 180,957,609.27
5. Step 5: Solve for x
   x = 180,957,609.27/16,978.68
6. Step 6: Final answer
   x = 10,657.93