Finding the Fourth Proportional to 11,395.83, 17,048.79 and 8,630.49

Step by Step Solution

1. Step 1: Write the proportion equation
   11,395.83 : 17,048.79 = 8,630.49 : x
2. Step 2: Convert to fraction form
   11,395.83/17,048.79 = 8,630.49/x
3. Step 3: Cross multiply
   11,395.83x = 17,048.79 × 8,630.49
4. Step 4: Simplify right side
   11,395.83x = 147,139,411.61
5. Step 5: Solve for x
   x = 147,139,411.61/11,395.83
6. Step 6: Final answer
   x = 12,911.69