Finding the Fourth Proportional to 7,779.89, 10,736.20 and 4,243.03

Step by Step Solution

1. Step 1: Write the proportion equation
   7,779.89 : 10,736.20 = 4,243.03 : x
2. Step 2: Convert to fraction form
   7,779.89/10,736.20 = 4,243.03/x
3. Step 3: Cross multiply
   7,779.89x = 10,736.20 × 4,243.03
4. Step 4: Simplify right side
   7,779.89x = 45,554,018.69
5. Step 5: Solve for x
   x = 45,554,018.69/7,779.89
6. Step 6: Final answer
   x = 5,855.36