Finding the Fourth Proportional to 35,830.30, 53,768.86 and 13,643.89

Step by Step Solution

1. Step 1: Write the proportion equation
   35,830.30 : 53,768.86 = 13,643.89 : x
2. Step 2: Convert to fraction form
   35,830.30/53,768.86 = 13,643.89/x
3. Step 3: Cross multiply
   35,830.30x = 53,768.86 × 13,643.89
4. Step 4: Simplify right side
   35,830.30x = 733,616,621.93
5. Step 5: Solve for x
   x = 733,616,621.93/35,830.30
6. Step 6: Final answer
   x = 20,474.76