Finding the Fourth Proportional to 25,300.80, 34,914.78 and 13,970.12

Step by Step Solution

1. Step 1: Write the proportion equation
   25,300.80 : 34,914.78 = 13,970.12 : x
2. Step 2: Convert to fraction form
   25,300.80/34,914.78 = 13,970.12/x
3. Step 3: Cross multiply
   25,300.80x = 34,914.78 × 13,970.12
4. Step 4: Simplify right side
   25,300.80x = 487,763,491.80
5. Step 5: Solve for x
   x = 487,763,491.80/25,300.80
6. Step 6: Final answer
   x = 19,278.58