Finding the Fourth Proportional to 10,018.94, 15,027.69 and 4,472.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,018.94 : 15,027.69 = 4,472.78 : x
2. Step 2: Convert to fraction form
   10,018.94/15,027.69 = 4,472.78/x
3. Step 3: Cross multiply
   10,018.94x = 15,027.69 × 4,472.78
4. Step 4: Simplify right side
   10,018.94x = 67,215,551.28
5. Step 5: Solve for x
   x = 67,215,551.28/10,018.94
6. Step 6: Final answer
   x = 6,708.85