Finding the Fourth Proportional to 8,186.72, 11,288.72 and 5,529.51

Step by Step Solution

1. Step 1: Write the proportion equation
   8,186.72 : 11,288.72 = 5,529.51 : x
2. Step 2: Convert to fraction form
   8,186.72/11,288.72 = 5,529.51/x
3. Step 3: Cross multiply
   8,186.72x = 11,288.72 × 5,529.51
4. Step 4: Simplify right side
   8,186.72x = 62,421,062.48
5. Step 5: Solve for x
   x = 62,421,062.48/8,186.72
6. Step 6: Final answer
   x = 7,624.68