Finding the Fourth Proportional to 16,870.74, 23,282.06 and 9,317.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,870.74 : 23,282.06 = 9,317.18 : x
2. Step 2: Convert to fraction form
   16,870.74/23,282.06 = 9,317.18/x
3. Step 3: Cross multiply
   16,870.74x = 23,282.06 × 9,317.18
4. Step 4: Simplify right side
   16,870.74x = 216,922,980.79
5. Step 5: Solve for x
   x = 216,922,980.79/16,870.74
6. Step 6: Final answer
   x = 12,857.94