Finding the Fourth Proportional to 8,789.78, 12,120.68 and 5,801.69

Step by Step Solution

1. Step 1: Write the proportion equation
   8,789.78 : 12,120.68 = 5,801.69 : x
2. Step 2: Convert to fraction form
   8,789.78/12,120.68 = 5,801.69/x
3. Step 3: Cross multiply
   8,789.78x = 12,120.68 × 5,801.69
4. Step 4: Simplify right side
   8,789.78x = 70,320,338.34
5. Step 5: Solve for x
   x = 70,320,338.34/8,789.78
6. Step 6: Final answer
   x = 8,000.24