Finding the Fourth Proportional to 7,078.89, 9,771.84 and 4,779.71

Step by Step Solution

1. Step 1: Write the proportion equation
   7,078.89 : 9,771.84 = 4,779.71 : x
2. Step 2: Convert to fraction form
   7,078.89/9,771.84 = 4,779.71/x
3. Step 3: Cross multiply
   7,078.89x = 9,771.84 × 4,779.71
4. Step 4: Simplify right side
   7,078.89x = 46,706,549.15
5. Step 5: Solve for x
   x = 46,706,549.15/7,078.89
6. Step 6: Final answer
   x = 6,598.00