Finding the Fourth Proportional to 5,367.48, 7,406.82 and 3,129.72

Step by Step Solution

1. Step 1: Write the proportion equation
   5,367.48 : 7,406.82 = 3,129.72 : x
2. Step 2: Convert to fraction form
   5,367.48/7,406.82 = 3,129.72/x
3. Step 3: Cross multiply
   5,367.48x = 7,406.82 × 3,129.72
4. Step 4: Simplify right side
   5,367.48x = 23,181,272.69
5. Step 5: Solve for x
   x = 23,181,272.69/5,367.48
6. Step 6: Final answer
   x = 4,318.84