Finding the Fourth Proportional to 16,782.10, 23,153.53 and 10,406.40

Step by Step Solution

1. Step 1: Write the proportion equation
   16,782.10 : 23,153.53 = 10,406.40 : x
2. Step 2: Convert to fraction form
   16,782.10/23,153.53 = 10,406.40/x
3. Step 3: Cross multiply
   16,782.10x = 23,153.53 × 10,406.40
4. Step 4: Simplify right side
   16,782.10x = 240,944,894.59
5. Step 5: Solve for x
   x = 240,944,894.59/16,782.10
6. Step 6: Final answer
   x = 14,357.26