Finding the Fourth Proportional to 30,801.12, 46,196.88 and 8,612.16

Step by Step Solution

1. Step 1: Write the proportion equation
   30,801.12 : 46,196.88 = 8,612.16 : x
2. Step 2: Convert to fraction form
   30,801.12/46,196.88 = 8,612.16/x
3. Step 3: Cross multiply
   30,801.12x = 46,196.88 × 8,612.16
4. Step 4: Simplify right side
   30,801.12x = 397,854,922.06
5. Step 5: Solve for x
   x = 397,854,922.06/30,801.12
6. Step 6: Final answer
   x = 12,916.90