Finding the Fourth Proportional to 7,789.99, 10,749.76 and 4,253.12

Step by Step Solution

1. Step 1: Write the proportion equation
   7,789.99 : 10,749.76 = 4,253.12 : x
2. Step 2: Convert to fraction form
   7,789.99/10,749.76 = 4,253.12/x
3. Step 3: Cross multiply
   7,789.99x = 10,749.76 × 4,253.12
4. Step 4: Simplify right side
   7,789.99x = 45,720,019.25
5. Step 5: Solve for x
   x = 45,720,019.25/7,789.99
6. Step 6: Final answer
   x = 5,869.07