Finding the Fourth Proportional to 16,964.87, 23,411.58 and 9,411.35

Step by Step Solution

1. Step 1: Write the proportion equation
   16,964.87 : 23,411.58 = 9,411.35 : x
2. Step 2: Convert to fraction form
   16,964.87/23,411.58 = 9,411.35/x
3. Step 3: Cross multiply
   16,964.87x = 23,411.58 × 9,411.35
4. Step 4: Simplify right side
   16,964.87x = 220,334,573.43
5. Step 5: Solve for x
   x = 220,334,573.43/16,964.87
6. Step 6: Final answer
   x = 12,987.70