Finding the Fourth Proportional to 13,630.69, 20,436.47 and 5,303.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,630.69 : 20,436.47 = 5,303.69 : x
2. Step 2: Convert to fraction form
   13,630.69/20,436.47 = 5,303.69/x
3. Step 3: Cross multiply
   13,630.69x = 20,436.47 × 5,303.69
4. Step 4: Simplify right side
   13,630.69x = 108,388,669.40
5. Step 5: Solve for x
   x = 108,388,669.40/13,630.69
6. Step 6: Final answer
   x = 7,951.81