Finding the Fourth Proportional to 16,705.30, 23,053.53 and 9,151.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,705.30 : 23,053.53 = 9,151.78 : x
2. Step 2: Convert to fraction form
   16,705.30/23,053.53 = 9,151.78/x
3. Step 3: Cross multiply
   16,705.30x = 23,053.53 × 9,151.78
4. Step 4: Simplify right side
   16,705.30x = 210,980,834.78
5. Step 5: Solve for x
   x = 210,980,834.78/16,705.30
6. Step 6: Final answer
   x = 12,629.57