Finding the Fourth Proportional to 23,036.40, 31,787.91 and 12,963.96

Step by Step Solution

1. Step 1: Write the proportion equation
   23,036.40 : 31,787.91 = 12,963.96 : x
2. Step 2: Convert to fraction form
   23,036.40/31,787.91 = 12,963.96/x
3. Step 3: Cross multiply
   23,036.40x = 31,787.91 × 12,963.96
4. Step 4: Simplify right side
   23,036.40x = 412,097,193.72
5. Step 5: Solve for x
   x = 412,097,193.72/23,036.40
6. Step 6: Final answer
   x = 17,888.96