Finding the Fourth Proportional to 7,456.78, 10,291.35 and 4,811.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,456.78 : 10,291.35 = 4,811.89 : x
2. Step 2: Convert to fraction form
   7,456.78/10,291.35 = 4,811.89/x
3. Step 3: Cross multiply
   7,456.78x = 10,291.35 × 4,811.89
4. Step 4: Simplify right side
   7,456.78x = 49,520,844.15
5. Step 5: Solve for x
   x = 49,520,844.15/7,456.78
6. Step 6: Final answer
   x = 6,641.05