Finding the Fourth Proportional to 12,778.69, 19,161.55 and 5,847.25

Step by Step Solution

1. Step 1: Write the proportion equation
   12,778.69 : 19,161.55 = 5,847.25 : x
2. Step 2: Convert to fraction form
   12,778.69/19,161.55 = 5,847.25/x
3. Step 3: Cross multiply
   12,778.69x = 19,161.55 × 5,847.25
4. Step 4: Simplify right side
   12,778.69x = 112,042,373.24
5. Step 5: Solve for x
   x = 112,042,373.24/12,778.69
6. Step 6: Final answer
   x = 8,767.91