Finding the Fourth Proportional to 25,156.14, 34,715.46 and 13,978.14

Step by Step Solution

1. Step 1: Write the proportion equation
   25,156.14 : 34,715.46 = 13,978.14 : x
2. Step 2: Convert to fraction form
   25,156.14/34,715.46 = 13,978.14/x
3. Step 3: Cross multiply
   25,156.14x = 34,715.46 × 13,978.14
4. Step 4: Simplify right side
   25,156.14x = 485,257,560.04
5. Step 5: Solve for x
   x = 485,257,560.04/25,156.14
6. Step 6: Final answer
   x = 19,289.83