Finding the Fourth Proportional to 25,158.79, 34,716.85 and 13,828.15

Step by Step Solution

1. Step 1: Write the proportion equation
   25,158.79 : 34,716.85 = 13,828.15 : x
2. Step 2: Convert to fraction form
   25,158.79/34,716.85 = 13,828.15/x
3. Step 3: Cross multiply
   25,158.79x = 34,716.85 × 13,828.15
4. Step 4: Simplify right side
   25,158.79x = 480,069,809.33
5. Step 5: Solve for x
   x = 480,069,809.33/25,158.79
6. Step 6: Final answer
   x = 19,081.59