Finding the Fourth Proportional to 16,860.56, 23,258.22 and 9,786.20

Step by Step Solution

1. Step 1: Write the proportion equation
   16,860.56 : 23,258.22 = 9,786.20 : x
2. Step 2: Convert to fraction form
   16,860.56/23,258.22 = 9,786.20/x
3. Step 3: Cross multiply
   16,860.56x = 23,258.22 × 9,786.20
4. Step 4: Simplify right side
   16,860.56x = 227,609,592.56
5. Step 5: Solve for x
   x = 227,609,592.56/16,860.56
6. Step 6: Final answer
   x = 13,499.53