Finding the Fourth Proportional to 16,280.54, 24,419.46 and 5,186.78

Step by Step Solution

1. Step 1: Write the proportion equation
   16,280.54 : 24,419.46 = 5,186.78 : x
2. Step 2: Convert to fraction form
   16,280.54/24,419.46 = 5,186.78/x
3. Step 3: Cross multiply
   16,280.54x = 24,419.46 × 5,186.78
4. Step 4: Simplify right side
   16,280.54x = 126,658,366.74
5. Step 5: Solve for x
   x = 126,658,366.74/16,280.54
6. Step 6: Final answer
   x = 7,779.74