Finding the Fourth Proportional to 16,878.71, 23,290.20 and 9,610.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,878.71 : 23,290.20 = 9,610.18 : x
2. Step 2: Convert to fraction form
   16,878.71/23,290.20 = 9,610.18/x
3. Step 3: Cross multiply
   16,878.71x = 23,290.20 × 9,610.18
4. Step 4: Simplify right side
   16,878.71x = 223,822,956.01
5. Step 5: Solve for x
   x = 223,822,956.01/16,878.71
6. Step 6: Final answer
   x = 13,260.67