Finding the Fourth Proportional to 16,718.16, 23,070.15 and 9,164.51

Step by Step Solution

1. Step 1: Write the proportion equation
   16,718.16 : 23,070.15 = 9,164.51 : x
2. Step 2: Convert to fraction form
   16,718.16/23,070.15 = 9,164.51/x
3. Step 3: Cross multiply
   16,718.16x = 23,070.15 × 9,164.51
4. Step 4: Simplify right side
   16,718.16x = 211,426,505.03
5. Step 5: Solve for x
   x = 211,426,505.03/16,718.16
6. Step 6: Final answer
   x = 12,646.52