Finding the Fourth Proportional to 23,106, 31,886.15 and 12,495.60

Step by Step Solution

1. Step 1: Write the proportion equation
   23,106 : 31,886.15 = 12,495.60 : x
2. Step 2: Convert to fraction form
   23,106/31,886.15 = 12,495.60/x
3. Step 3: Cross multiply
   23,106x = 31,886.15 × 12,495.60
4. Step 4: Simplify right side
   23,106x = 398,436,513.46
5. Step 5: Solve for x
   x = 398,436,513.46/23,106
6. Step 6: Final answer
   x = 17,243.85