Finding the Fourth Proportional to 6,131.28, 8,469.78 and 5,467.92

Step by Step Solution

1. Step 1: Write the proportion equation
   6,131.28 : 8,469.78 = 5,467.92 : x
2. Step 2: Convert to fraction form
   6,131.28/8,469.78 = 5,467.92/x
3. Step 3: Cross multiply
   6,131.28x = 8,469.78 × 5,467.92
4. Step 4: Simplify right side
   6,131.28x = 46,312,079.46
5. Step 5: Solve for x
   x = 46,312,079.46/6,131.28
6. Step 6: Final answer
   x = 7,553.41