Finding the Fourth Proportional to 16,978.74, 23,421.46 and 10,266.53

Step by Step Solution

1. Step 1: Write the proportion equation
   16,978.74 : 23,421.46 = 10,266.53 : x
2. Step 2: Convert to fraction form
   16,978.74/23,421.46 = 10,266.53/x
3. Step 3: Cross multiply
   16,978.74x = 23,421.46 × 10,266.53
4. Step 4: Simplify right side
   16,978.74x = 240,457,121.73
5. Step 5: Solve for x
   x = 240,457,121.73/16,978.74
6. Step 6: Final answer
   x = 14,162.25