Finding the Fourth Proportional to 12,148.43, 18,212.49 and 5,133.83

Step by Step Solution

1. Step 1: Write the proportion equation
   12,148.43 : 18,212.49 = 5,133.83 : x
2. Step 2: Convert to fraction form
   12,148.43/18,212.49 = 5,133.83/x
3. Step 3: Cross multiply
   12,148.43x = 18,212.49 × 5,133.83
4. Step 4: Simplify right side
   12,148.43x = 93,499,736.47
5. Step 5: Solve for x
   x = 93,499,736.47/12,148.43
6. Step 6: Final answer
   x = 7,696.45