Finding the Fourth Proportional to 10,425.78, 15,636.51 and 3,847.47

Step by Step Solution

1. Step 1: Write the proportion equation
   10,425.78 : 15,636.51 = 3,847.47 : x
2. Step 2: Convert to fraction form
   10,425.78/15,636.51 = 3,847.47/x
3. Step 3: Cross multiply
   10,425.78x = 15,636.51 × 3,847.47
4. Step 4: Simplify right side
   10,425.78x = 60,161,003.13
5. Step 5: Solve for x
   x = 60,161,003.13/10,425.78
6. Step 6: Final answer
   x = 5,770.41