Finding the Fourth Proportional to 13,300.05, 19,934.51 and 8,550.15

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.05 : 19,934.51 = 8,550.15 : x
2. Step 2: Convert to fraction form
   13,300.05/19,934.51 = 8,550.15/x
3. Step 3: Cross multiply
   13,300.05x = 19,934.51 × 8,550.15
4. Step 4: Simplify right side
   13,300.05x = 170,443,007.93
5. Step 5: Solve for x
   x = 170,443,007.93/13,300.05
6. Step 6: Final answer
   x = 12,815.22