Finding the Fourth Proportional to 5,645.27, 7,790.72 and 3,127.37

Step by Step Solution

1. Step 1: Write the proportion equation
   5,645.27 : 7,790.72 = 3,127.37 : x
2. Step 2: Convert to fraction form
   5,645.27/7,790.72 = 3,127.37/x
3. Step 3: Cross multiply
   5,645.27x = 7,790.72 × 3,127.37
4. Step 4: Simplify right side
   5,645.27x = 24,364,409.42
5. Step 5: Solve for x
   x = 24,364,409.42/5,645.27
6. Step 6: Final answer
   x = 4,315.90