Finding the Fourth Proportional to 13,320.01, 18,380.89 and 8,284.10

Step by Step Solution

1. Step 1: Write the proportion equation
   13,320.01 : 18,380.89 = 8,284.10 : x
2. Step 2: Convert to fraction form
   13,320.01/18,380.89 = 8,284.10/x
3. Step 3: Cross multiply
   13,320.01x = 18,380.89 × 8,284.10
4. Step 4: Simplify right side
   13,320.01x = 152,269,049.30
5. Step 5: Solve for x
   x = 152,269,049.30/13,320.01
6. Step 6: Final answer
   x = 11,431.60