Finding the Fourth Proportional to 30,646.32, 45,942.12 and 13,107.12

Step by Step Solution

1. Step 1: Write the proportion equation
   30,646.32 : 45,942.12 = 13,107.12 : x
2. Step 2: Convert to fraction form
   30,646.32/45,942.12 = 13,107.12/x
3. Step 3: Cross multiply
   30,646.32x = 45,942.12 × 13,107.12
4. Step 4: Simplify right side
   30,646.32x = 602,168,879.89
5. Step 5: Solve for x
   x = 602,168,879.89/30,646.32
6. Step 6: Final answer
   x = 19,648.98