Finding the Fourth Proportional to 23,116.16, 31,900.32 and 13,046.72

Step by Step Solution

1. Step 1: Write the proportion equation
   23,116.16 : 31,900.32 = 13,046.72 : x
2. Step 2: Convert to fraction form
   23,116.16/31,900.32 = 13,046.72/x
3. Step 3: Cross multiply
   23,116.16x = 31,900.32 × 13,046.72
4. Step 4: Simplify right side
   23,116.16x = 416,194,542.95
5. Step 5: Solve for x
   x = 416,194,542.95/23,116.16
6. Step 6: Final answer
   x = 18,004.48