Finding the Fourth Proportional to 8,797.85, 12,141.61 and 5,774.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,797.85 : 12,141.61 = 5,774.78 : x
2. Step 2: Convert to fraction form
   8,797.85/12,141.61 = 5,774.78/x
3. Step 3: Cross multiply
   8,797.85x = 12,141.61 × 5,774.78
4. Step 4: Simplify right side
   8,797.85x = 70,115,126.60
5. Step 5: Solve for x
   x = 70,115,126.60/8,797.85
6. Step 6: Final answer
   x = 7,969.58