Finding the Fourth Proportional to 12,783.42, 19,178.21 and 4,018.33

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.42 : 19,178.21 = 4,018.33 : x
2. Step 2: Convert to fraction form
   12,783.42/19,178.21 = 4,018.33/x
3. Step 3: Cross multiply
   12,783.42x = 19,178.21 × 4,018.33
4. Step 4: Simplify right side
   12,783.42x = 77,064,308.55
5. Step 5: Solve for x
   x = 77,064,308.55/12,783.42
6. Step 6: Final answer
   x = 6,028.46