Finding the Fourth Proportional to 12,783.92, 19,178.52 and 4,018.64

Step by Step Solution

1. Step 1: Write the proportion equation
   12,783.92 : 19,178.52 = 4,018.64 : x
2. Step 2: Convert to fraction form
   12,783.92/19,178.52 = 4,018.64/x
3. Step 3: Cross multiply
   12,783.92x = 19,178.52 × 4,018.64
4. Step 4: Simplify right side
   12,783.92x = 77,071,567.61
5. Step 5: Solve for x
   x = 77,071,567.61/12,783.92
6. Step 6: Final answer
   x = 6,028.79