Finding the Fourth Proportional to 11,019.18, 16,530.59 and 5,472.71

Step by Step Solution

1. Step 1: Write the proportion equation
   11,019.18 : 16,530.59 = 5,472.71 : x
2. Step 2: Convert to fraction form
   11,019.18/16,530.59 = 5,472.71/x
3. Step 3: Cross multiply
   11,019.18x = 16,530.59 × 5,472.71
4. Step 4: Simplify right side
   11,019.18x = 90,467,056.23
5. Step 5: Solve for x
   x = 90,467,056.23/11,019.18
6. Step 6: Final answer
   x = 8,209.96