Finding the Fourth Proportional to 8,090.37, 12,127.20 and 5,863.78

Step by Step Solution

1. Step 1: Write the proportion equation
   8,090.37 : 12,127.20 = 5,863.78 : x
2. Step 2: Convert to fraction form
   8,090.37/12,127.20 = 5,863.78/x
3. Step 3: Cross multiply
   8,090.37x = 12,127.20 × 5,863.78
4. Step 4: Simplify right side
   8,090.37x = 71,111,232.82
5. Step 5: Solve for x
   x = 71,111,232.82/8,090.37
6. Step 6: Final answer
   x = 8,789.61