Finding the Fourth Proportional to 9,320.05, 12,860.94 and 5,782.58

Step by Step Solution

1. Step 1: Write the proportion equation
   9,320.05 : 12,860.94 = 5,782.58 : x
2. Step 2: Convert to fraction form
   9,320.05/12,860.94 = 5,782.58/x
3. Step 3: Cross multiply
   9,320.05x = 12,860.94 × 5,782.58
4. Step 4: Simplify right side
   9,320.05x = 74,369,414.43
5. Step 5: Solve for x
   x = 74,369,414.43/9,320.05
6. Step 6: Final answer
   x = 7,979.51