Finding the Fourth Proportional to 5,501.72, 8,255.64 and 4,271.60

Step by Step Solution

1. Step 1: Write the proportion equation
   5,501.72 : 8,255.64 = 4,271.60 : x
2. Step 2: Convert to fraction form
   5,501.72/8,255.64 = 4,271.60/x
3. Step 3: Cross multiply
   5,501.72x = 8,255.64 × 4,271.60
4. Step 4: Simplify right side
   5,501.72x = 35,264,791.82
5. Step 5: Solve for x
   x = 35,264,791.82/5,501.72
6. Step 6: Final answer
   x = 6,409.78