Finding the Fourth Proportional to 8,764.91, 12,094.72 and 4,987.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,764.91 : 12,094.72 = 4,987.78 : x
2. Step 2: Convert to fraction form
   8,764.91/12,094.72 = 4,987.78/x
3. Step 3: Cross multiply
   8,764.91x = 12,094.72 × 4,987.78
4. Step 4: Simplify right side
   8,764.91x = 60,325,759.82
5. Step 5: Solve for x
   x = 60,325,759.82/8,764.91
6. Step 6: Final answer
   x = 6,882.65