Finding the Fourth Proportional to 8,791.59, 13,185.96 and 3,247.55

Step by Step Solution

1. Step 1: Write the proportion equation
   8,791.59 : 13,185.96 = 3,247.55 : x
2. Step 2: Convert to fraction form
   8,791.59/13,185.96 = 3,247.55/x
3. Step 3: Cross multiply
   8,791.59x = 13,185.96 × 3,247.55
4. Step 4: Simplify right side
   8,791.59x = 42,821,998.47
5. Step 5: Solve for x
   x = 42,821,998.47/8,791.59
6. Step 6: Final answer
   x = 4,870.79