Finding the Fourth Proportional to 6,790.72, 9,371.18 and 3,806.55

Step by Step Solution

1. Step 1: Write the proportion equation
   6,790.72 : 9,371.18 = 3,806.55 : x
2. Step 2: Convert to fraction form
   6,790.72/9,371.18 = 3,806.55/x
3. Step 3: Cross multiply
   6,790.72x = 9,371.18 × 3,806.55
4. Step 4: Simplify right side
   6,790.72x = 35,671,895.61
5. Step 5: Solve for x
   x = 35,671,895.61/6,790.72
6. Step 6: Final answer
   x = 5,253.04