Finding the Fourth Proportional to 9,158.78, 12,631.20 and 5,797.82

Step by Step Solution

1. Step 1: Write the proportion equation
   9,158.78 : 12,631.20 = 5,797.82 : x
2. Step 2: Convert to fraction form
   9,158.78/12,631.20 = 5,797.82/x
3. Step 3: Cross multiply
   9,158.78x = 12,631.20 × 5,797.82
4. Step 4: Simplify right side
   9,158.78x = 73,233,423.98
5. Step 5: Solve for x
   x = 73,233,423.98/9,158.78
6. Step 6: Final answer
   x = 7,995.98