Finding the Fourth Proportional to 25,013.34, 34,517.12 and 13,680.63

Step by Step Solution

1. Step 1: Write the proportion equation
   25,013.34 : 34,517.12 = 13,680.63 : x
2. Step 2: Convert to fraction form
   25,013.34/34,517.12 = 13,680.63/x
3. Step 3: Cross multiply
   25,013.34x = 34,517.12 × 13,680.63
4. Step 4: Simplify right side
   25,013.34x = 472,215,947.39
5. Step 5: Solve for x
   x = 472,215,947.39/25,013.34
6. Step 6: Final answer
   x = 18,878.56