Finding the Fourth Proportional to 10,485.34, 15,725.49 and 3,087.79

Step by Step Solution

1. Step 1: Write the proportion equation
   10,485.34 : 15,725.49 = 3,087.79 : x
2. Step 2: Convert to fraction form
   10,485.34/15,725.49 = 3,087.79/x
3. Step 3: Cross multiply
   10,485.34x = 15,725.49 × 3,087.79
4. Step 4: Simplify right side
   10,485.34x = 48,557,010.77
5. Step 5: Solve for x
   x = 48,557,010.77/10,485.34
6. Step 6: Final answer
   x = 4,630.94