Finding the Fourth Proportional to 16,961.58, 23,409.78 and 9,410.34

Step by Step Solution

1. Step 1: Write the proportion equation
   16,961.58 : 23,409.78 = 9,410.34 : x
2. Step 2: Convert to fraction form
   16,961.58/23,409.78 = 9,410.34/x
3. Step 3: Cross multiply
   16,961.58x = 23,409.78 × 9,410.34
4. Step 4: Simplify right side
   16,961.58x = 220,293,883.55
5. Step 5: Solve for x
   x = 220,293,883.55/16,961.58
6. Step 6: Final answer
   x = 12,987.82