Finding the Fourth Proportional to 16,674.53, 23,010.68 and 9,120.87

Step by Step Solution

1. Step 1: Write the proportion equation
   16,674.53 : 23,010.68 = 9,120.87 : x
2. Step 2: Convert to fraction form
   16,674.53/23,010.68 = 9,120.87/x
3. Step 3: Cross multiply
   16,674.53x = 23,010.68 × 9,120.87
4. Step 4: Simplify right side
   16,674.53x = 209,877,443.69
5. Step 5: Solve for x
   x = 209,877,443.69/16,674.53
6. Step 6: Final answer
   x = 12,586.71