Finding the Fourth Proportional to 10,390.98, 15,592.63 and 3,821.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,390.98 : 15,592.63 = 3,821.78 : x
2. Step 2: Convert to fraction form
   10,390.98/15,592.63 = 3,821.78/x
3. Step 3: Cross multiply
   10,390.98x = 15,592.63 × 3,821.78
4. Step 4: Simplify right side
   10,390.98x = 59,591,627.33
5. Step 5: Solve for x
   x = 59,591,627.33/10,390.98
6. Step 6: Final answer
   x = 5,734.94