Finding the Fourth Proportional to 8,782.83, 12,121.43 and 5,427.27

Step by Step Solution

1. Step 1: Write the proportion equation
   8,782.83 : 12,121.43 = 5,427.27 : x
2. Step 2: Convert to fraction form
   8,782.83/12,121.43 = 5,427.27/x
3. Step 3: Cross multiply
   8,782.83x = 12,121.43 × 5,427.27
4. Step 4: Simplify right side
   8,782.83x = 65,786,273.40
5. Step 5: Solve for x
   x = 65,786,273.40/8,782.83
6. Step 6: Final answer
   x = 7,490.33