Finding the Fourth Proportional to 8,764.18, 12,086.35 and 5,774.81

Step by Step Solution

1. Step 1: Write the proportion equation
   8,764.18 : 12,086.35 = 5,774.81 : x
2. Step 2: Convert to fraction form
   8,764.18/12,086.35 = 5,774.81/x
3. Step 3: Cross multiply
   8,764.18x = 12,086.35 × 5,774.81
4. Step 4: Simplify right side
   8,764.18x = 69,796,299.97
5. Step 5: Solve for x
   x = 69,796,299.97/8,764.18
6. Step 6: Final answer
   x = 7,963.82