Finding the Fourth Proportional to 12,779, 19,152.27 and 5,751.49

Step by Step Solution

1. Step 1: Write the proportion equation
   12,779 : 19,152.27 = 5,751.49 : x
2. Step 2: Convert to fraction form
   12,779/19,152.27 = 5,751.49/x
3. Step 3: Cross multiply
   12,779x = 19,152.27 × 5,751.49
4. Step 4: Simplify right side
   12,779x = 110,154,089.38
5. Step 5: Solve for x
   x = 110,154,089.38/12,779
6. Step 6: Final answer
   x = 8,619.93