Finding the Fourth Proportional to 16,788.15, 23,165.06 and 9,715.23

Step by Step Solution

1. Step 1: Write the proportion equation
   16,788.15 : 23,165.06 = 9,715.23 : x
2. Step 2: Convert to fraction form
   16,788.15/23,165.06 = 9,715.23/x
3. Step 3: Cross multiply
   16,788.15x = 23,165.06 × 9,715.23
4. Step 4: Simplify right side
   16,788.15x = 225,053,837.29
5. Step 5: Solve for x
   x = 225,053,837.29/16,788.15
6. Step 6: Final answer
   x = 13,405.52