Finding the Fourth Proportional to 5,436.16, 7,498.56 and 4,739.20

Step by Step Solution

1. Step 1: Write the proportion equation
   5,436.16 : 7,498.56 = 4,739.20 : x
2. Step 2: Convert to fraction form
   5,436.16/7,498.56 = 4,739.20/x
3. Step 3: Cross multiply
   5,436.16x = 7,498.56 × 4,739.20
4. Step 4: Simplify right side
   5,436.16x = 35,537,175.55
5. Step 5: Solve for x
   x = 35,537,175.55/5,436.16
6. Step 6: Final answer
   x = 6,537.18