Finding the Fourth Proportional to 7,826.68, 10,800.72 and 4,289.89

Step by Step Solution

1. Step 1: Write the proportion equation
   7,826.68 : 10,800.72 = 4,289.89 : x
2. Step 2: Convert to fraction form
   7,826.68/10,800.72 = 4,289.89/x
3. Step 3: Cross multiply
   7,826.68x = 10,800.72 × 4,289.89
4. Step 4: Simplify right side
   7,826.68x = 46,333,851.53
5. Step 5: Solve for x
   x = 46,333,851.53/7,826.68
6. Step 6: Final answer
   x = 5,919.99