Finding the Fourth Proportional to 17,145.36, 23,659.56 and 10,859.76

Step by Step Solution

1. Step 1: Write the proportion equation
   17,145.36 : 23,659.56 = 10,859.76 : x
2. Step 2: Convert to fraction form
   17,145.36/23,659.56 = 10,859.76/x
3. Step 3: Cross multiply
   17,145.36x = 23,659.56 × 10,859.76
4. Step 4: Simplify right side
   17,145.36x = 256,937,143.31
5. Step 5: Solve for x
   x = 256,937,143.31/17,145.36
6. Step 6: Final answer
   x = 14,985.81