Finding the Fourth Proportional to 30,865.05, 46,300.31 and 8,678.62

Step by Step Solution

1. Step 1: Write the proportion equation
   30,865.05 : 46,300.31 = 8,678.62 : x
2. Step 2: Convert to fraction form
   30,865.05/46,300.31 = 8,678.62/x
3. Step 3: Cross multiply
   30,865.05x = 46,300.31 × 8,678.62
4. Step 4: Simplify right side
   30,865.05x = 401,822,796.37
5. Step 5: Solve for x
   x = 401,822,796.37/30,865.05
6. Step 6: Final answer
   x = 13,018.70