Finding the Fourth Proportional to 8,118.72, 11,190.72 and 5,465.28

Step by Step Solution

1. Step 1: Write the proportion equation
   8,118.72 : 11,190.72 = 5,465.28 : x
2. Step 2: Convert to fraction form
   8,118.72/11,190.72 = 5,465.28/x
3. Step 3: Cross multiply
   8,118.72x = 11,190.72 × 5,465.28
4. Step 4: Simplify right side
   8,118.72x = 61,160,418.20
5. Step 5: Solve for x
   x = 61,160,418.20/8,118.72
6. Step 6: Final answer
   x = 7,533.26