Finding the Fourth Proportional to 7,815.69, 10,783.40 and 4,671.27

Step by Step Solution

1. Step 1: Write the proportion equation
   7,815.69 : 10,783.40 = 4,671.27 : x
2. Step 2: Convert to fraction form
   7,815.69/10,783.40 = 4,671.27/x
3. Step 3: Cross multiply
   7,815.69x = 10,783.40 × 4,671.27
4. Step 4: Simplify right side
   7,815.69x = 50,372,149.56
5. Step 5: Solve for x
   x = 50,372,149.56/7,815.69
6. Step 6: Final answer
   x = 6,445.00