Finding the Fourth Proportional to 5,576.58, 7,687.98 and 5,404.05

Step by Step Solution

1. Step 1: Write the proportion equation
   5,576.58 : 7,687.98 = 5,404.05 : x
2. Step 2: Convert to fraction form
   5,576.58/7,687.98 = 5,404.05/x
3. Step 3: Cross multiply
   5,576.58x = 7,687.98 × 5,404.05
4. Step 4: Simplify right side
   5,576.58x = 41,546,228.32
5. Step 5: Solve for x
   x = 41,546,228.32/5,576.58
6. Step 6: Final answer
   x = 7,450.13