Finding the Fourth Proportional to 16,866.34, 23,276.30 and 9,698.57

Step by Step Solution

1. Step 1: Write the proportion equation
   16,866.34 : 23,276.30 = 9,698.57 : x
2. Step 2: Convert to fraction form
   16,866.34/23,276.30 = 9,698.57/x
3. Step 3: Cross multiply
   16,866.34x = 23,276.30 × 9,698.57
4. Step 4: Simplify right side
   16,866.34x = 225,746,824.89
5. Step 5: Solve for x
   x = 225,746,824.89/16,866.34
6. Step 6: Final answer
   x = 13,384.46