Finding the Fourth Proportional to 25,267.79, 34,870.39 and 13,783.33

Step by Step Solution

1. Step 1: Write the proportion equation
   25,267.79 : 34,870.39 = 13,783.33 : x
2. Step 2: Convert to fraction form
   25,267.79/34,870.39 = 13,783.33/x
3. Step 3: Cross multiply
   25,267.79x = 34,870.39 × 13,783.33
4. Step 4: Simplify right side
   25,267.79x = 480,629,970.96
5. Step 5: Solve for x
   x = 480,629,970.96/25,267.79
6. Step 6: Final answer
   x = 19,021.45