Finding the Fourth Proportional to 9,514.65, 13,128.12 and 5,978.55

Step by Step Solution

1. Step 1: Write the proportion equation
   9,514.65 : 13,128.12 = 5,978.55 : x
2. Step 2: Convert to fraction form
   9,514.65/13,128.12 = 5,978.55/x
3. Step 3: Cross multiply
   9,514.65x = 13,128.12 × 5,978.55
4. Step 4: Simplify right side
   9,514.65x = 78,487,121.83
5. Step 5: Solve for x
   x = 78,487,121.83/9,514.65
6. Step 6: Final answer
   x = 8,249.08