Finding the Fourth Proportional to 13,488.52, 18,624.18 and 8,190.49

Step by Step Solution

1. Step 1: Write the proportion equation
   13,488.52 : 18,624.18 = 8,190.49 : x
2. Step 2: Convert to fraction form
   13,488.52/18,624.18 = 8,190.49/x
3. Step 3: Cross multiply
   13,488.52x = 18,624.18 × 8,190.49
4. Step 4: Simplify right side
   13,488.52x = 152,541,160.05
5. Step 5: Solve for x
   x = 152,541,160.05/13,488.52
6. Step 6: Final answer
   x = 11,308.96