Finding the Fourth Proportional to 23,116.70, 31,901 and 12,506.34

Step by Step Solution

1. Step 1: Write the proportion equation
   23,116.70 : 31,901 = 12,506.34 : x
2. Step 2: Convert to fraction form
   23,116.70/31,901 = 12,506.34/x
3. Step 3: Cross multiply
   23,116.70x = 31,901 × 12,506.34
4. Step 4: Simplify right side
   23,116.70x = 398,964,752.34
5. Step 5: Solve for x
   x = 398,964,752.34/23,116.70
6. Step 6: Final answer
   x = 17,258.72