Finding the Fourth Proportional to 5,574.96, 8,355.38 and 5,429.61

Step by Step Solution

1. Step 1: Write the proportion equation
   5,574.96 : 8,355.38 = 5,429.61 : x
2. Step 2: Convert to fraction form
   5,574.96/8,355.38 = 5,429.61/x
3. Step 3: Cross multiply
   5,574.96x = 8,355.38 × 5,429.61
4. Step 4: Simplify right side
   5,574.96x = 45,366,427.65
5. Step 5: Solve for x
   x = 45,366,427.65/5,574.96
6. Step 6: Final answer
   x = 8,137.53