Finding the Fourth Proportional to 7,456.30, 10,289.71 and 4,099.45

Step by Step Solution

1. Step 1: Write the proportion equation
   7,456.30 : 10,289.71 = 4,099.45 : x
2. Step 2: Convert to fraction form
   7,456.30/10,289.71 = 4,099.45/x
3. Step 3: Cross multiply
   7,456.30x = 10,289.71 × 4,099.45
4. Step 4: Simplify right side
   7,456.30x = 42,182,151.66
5. Step 5: Solve for x
   x = 42,182,151.66/7,456.30
6. Step 6: Final answer
   x = 5,657.25