Finding the Fourth Proportional to 31,103.62, 46,663.47 and 8,918.62

Step by Step Solution

1. Step 1: Write the proportion equation
   31,103.62 : 46,663.47 = 8,918.62 : x
2. Step 2: Convert to fraction form
   31,103.62/46,663.47 = 8,918.62/x
3. Step 3: Cross multiply
   31,103.62x = 46,663.47 × 8,918.62
4. Step 4: Simplify right side
   31,103.62x = 416,173,640.15
5. Step 5: Solve for x
   x = 416,173,640.15/31,103.62
6. Step 6: Final answer
   x = 13,380.23