Finding the Fourth Proportional to 11,016.56, 16,527.54 and 5,166.35

Step by Step Solution

1. Step 1: Write the proportion equation
   11,016.56 : 16,527.54 = 5,166.35 : x
2. Step 2: Convert to fraction form
   11,016.56/16,527.54 = 5,166.35/x
3. Step 3: Cross multiply
   11,016.56x = 16,527.54 × 5,166.35
4. Step 4: Simplify right side
   11,016.56x = 85,387,056.28
5. Step 5: Solve for x
   x = 85,387,056.28/11,016.56
6. Step 6: Final answer
   x = 7,750.79