Finding the Fourth Proportional to 7,436.12, 10,261.78 and 4,078.87

Step by Step Solution

1. Step 1: Write the proportion equation
   7,436.12 : 10,261.78 = 4,078.87 : x
2. Step 2: Convert to fraction form
   7,436.12/10,261.78 = 4,078.87/x
3. Step 3: Cross multiply
   7,436.12x = 10,261.78 × 4,078.87
4. Step 4: Simplify right side
   7,436.12x = 41,856,466.59
5. Step 5: Solve for x
   x = 41,856,466.59/7,436.12
6. Step 6: Final answer
   x = 5,628.80