Finding the Fourth Proportional to 5,445.69, 7,517.55 and 4,186.31

Step by Step Solution

1. Step 1: Write the proportion equation
   5,445.69 : 7,517.55 = 4,186.31 : x
2. Step 2: Convert to fraction form
   5,445.69/7,517.55 = 4,186.31/x
3. Step 3: Cross multiply
   5,445.69x = 7,517.55 × 4,186.31
4. Step 4: Simplify right side
   5,445.69x = 31,470,764.56
5. Step 5: Solve for x
   x = 31,470,764.56/5,445.69
6. Step 6: Final answer
   x = 5,779.02