Finding the Fourth Proportional to 8,963.91, 13,447.89 and 5,019.12

Step by Step Solution

1. Step 1: Write the proportion equation
   8,963.91 : 13,447.89 = 5,019.12 : x
2. Step 2: Convert to fraction form
   8,963.91/13,447.89 = 5,019.12/x
3. Step 3: Cross multiply
   8,963.91x = 13,447.89 × 5,019.12
4. Step 4: Simplify right side
   8,963.91x = 67,496,573.66
5. Step 5: Solve for x
   x = 67,496,573.66/8,963.91
6. Step 6: Final answer
   x = 7,529.81