Finding the Fourth Proportional to 16,856.16, 23,257.56 and 9,781.32

Step by Step Solution

1. Step 1: Write the proportion equation
   16,856.16 : 23,257.56 = 9,781.32 : x
2. Step 2: Convert to fraction form
   16,856.16/23,257.56 = 9,781.32/x
3. Step 3: Cross multiply
   16,856.16x = 23,257.56 × 9,781.32
4. Step 4: Simplify right side
   16,856.16x = 227,489,636.78
5. Step 5: Solve for x
   x = 227,489,636.78/16,856.16
6. Step 6: Final answer
   x = 13,495.93