Finding the Fourth Proportional to 10,115.34, 15,179.49 and 4,918.38

Step by Step Solution

1. Step 1: Write the proportion equation
   10,115.34 : 15,179.49 = 4,918.38 : x
2. Step 2: Convert to fraction form
   10,115.34/15,179.49 = 4,918.38/x
3. Step 3: Cross multiply
   10,115.34x = 15,179.49 × 4,918.38
4. Step 4: Simplify right side
   10,115.34x = 74,658,500.03
5. Step 5: Solve for x
   x = 74,658,500.03/10,115.34
6. Step 6: Final answer
   x = 7,380.72