Finding the Fourth Proportional to 46,485.42, 69,714.15 and 13,208.19

Step by Step Solution

1. Step 1: Write the proportion equation
   46,485.42 : 69,714.15 = 13,208.19 : x
2. Step 2: Convert to fraction form
   46,485.42/69,714.15 = 13,208.19/x
3. Step 3: Cross multiply
   46,485.42x = 69,714.15 × 13,208.19
4. Step 4: Simplify right side
   46,485.42x = 920,797,738.89
5. Step 5: Solve for x
   x = 920,797,738.89/46,485.42
6. Step 6: Final answer
   x = 19,808.31