Finding the Fourth Proportional to 16,959.77, 23,405.96 and 9,886.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,959.77 : 23,405.96 = 9,886.04 : x
2. Step 2: Convert to fraction form
   16,959.77/23,405.96 = 9,886.04/x
3. Step 3: Cross multiply
   16,959.77x = 23,405.96 × 9,886.04
4. Step 4: Simplify right side
   16,959.77x = 231,392,256.80
5. Step 5: Solve for x
   x = 231,392,256.80/16,959.77
6. Step 6: Final answer
   x = 13,643.60