Finding the Fourth Proportional to 23,035.64, 31,786.72 and 12,963.91

Step by Step Solution

1. Step 1: Write the proportion equation
   23,035.64 : 31,786.72 = 12,963.91 : x
2. Step 2: Convert to fraction form
   23,035.64/31,786.72 = 12,963.91/x
3. Step 3: Cross multiply
   23,035.64x = 31,786.72 × 12,963.91
4. Step 4: Simplify right side
   23,035.64x = 412,080,177.28
5. Step 5: Solve for x
   x = 412,080,177.28/23,035.64
6. Step 6: Final answer
   x = 17,888.81