Finding the Fourth Proportional to 13,300.21, 18,355.39 and 7,333.05

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.21 : 18,355.39 = 7,333.05 : x
2. Step 2: Convert to fraction form
   13,300.21/18,355.39 = 7,333.05/x
3. Step 3: Cross multiply
   13,300.21x = 18,355.39 × 7,333.05
4. Step 4: Simplify right side
   13,300.21x = 134,600,900.86
5. Step 5: Solve for x
   x = 134,600,900.86/13,300.21
6. Step 6: Final answer
   x = 10,120.21