Finding the Fourth Proportional to 14,208, 19,607.72 and 7,920.38

Step by Step Solution

1. Step 1: Write the proportion equation
   14,208 : 19,607.72 = 7,920.38 : x
2. Step 2: Convert to fraction form
   14,208/19,607.72 = 7,920.38/x
3. Step 3: Cross multiply
   14,208x = 19,607.72 × 7,920.38
4. Step 4: Simplify right side
   14,208x = 155,300,455.69
5. Step 5: Solve for x
   x = 155,300,455.69/14,208
6. Step 6: Final answer
   x = 10,930.49