Finding the Fourth Proportional to 16,680.47, 25,022.45 and 5,436.68

Step by Step Solution

1. Step 1: Write the proportion equation
   16,680.47 : 25,022.45 = 5,436.68 : x
2. Step 2: Convert to fraction form
   16,680.47/25,022.45 = 5,436.68/x
3. Step 3: Cross multiply
   16,680.47x = 25,022.45 × 5,436.68
4. Step 4: Simplify right side
   16,680.47x = 136,039,053.47
5. Step 5: Solve for x
   x = 136,039,053.47/16,680.47
6. Step 6: Final answer
   x = 8,155.59