Finding the Fourth Proportional to 5,404.88, 7,454.80 and 4,131.64

Step by Step Solution

1. Step 1: Write the proportion equation
   5,404.88 : 7,454.80 = 4,131.64 : x
2. Step 2: Convert to fraction form
   5,404.88/7,454.80 = 4,131.64/x
3. Step 3: Cross multiply
   5,404.88x = 7,454.80 × 4,131.64
4. Step 4: Simplify right side
   5,404.88x = 30,800,549.87
5. Step 5: Solve for x
   x = 30,800,549.87/5,404.88
6. Step 6: Final answer
   x = 5,698.65