Finding the Fourth Proportional to 13,300.78, 18,355.20 and 7,332.67

Step by Step Solution

1. Step 1: Write the proportion equation
   13,300.78 : 18,355.20 = 7,332.67 : x
2. Step 2: Convert to fraction form
   13,300.78/18,355.20 = 7,332.67/x
3. Step 3: Cross multiply
   13,300.78x = 18,355.20 × 7,332.67
4. Step 4: Simplify right side
   13,300.78x = 134,592,624.38
5. Step 5: Solve for x
   x = 134,592,624.38/13,300.78
6. Step 6: Final answer
   x = 10,119.15