Finding the Fourth Proportional to 25,168.56, 34,732.56 and 13,990.56

Step by Step Solution

1. Step 1: Write the proportion equation
   25,168.56 : 34,732.56 = 13,990.56 : x
2. Step 2: Convert to fraction form
   25,168.56/34,732.56 = 13,990.56/x
3. Step 3: Cross multiply
   25,168.56x = 34,732.56 × 13,990.56
4. Step 4: Simplify right side
   25,168.56x = 485,927,964.63
5. Step 5: Solve for x
   x = 485,927,964.63/25,168.56
6. Step 6: Final answer
   x = 19,306.94