Finding the Fourth Proportional to 10,078.65, 15,124.86 and 3,504.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,078.65 : 15,124.86 = 3,504.78 : x
2. Step 2: Convert to fraction form
   10,078.65/15,124.86 = 3,504.78/x
3. Step 3: Cross multiply
   10,078.65x = 15,124.86 × 3,504.78
4. Step 4: Simplify right side
   10,078.65x = 53,009,306.83
5. Step 5: Solve for x
   x = 53,009,306.83/10,078.65
6. Step 6: Final answer
   x = 5,259.56