Finding the Fourth Proportional to 35,789.13, 53,668.71 and 13,590.27

Step by Step Solution

1. Step 1: Write the proportion equation
   35,789.13 : 53,668.71 = 13,590.27 : x
2. Step 2: Convert to fraction form
   35,789.13/53,668.71 = 13,590.27/x
3. Step 3: Cross multiply
   35,789.13x = 53,668.71 × 13,590.27
4. Step 4: Simplify right side
   35,789.13x = 729,372,259.45
5. Step 5: Solve for x
   x = 729,372,259.45/35,789.13
6. Step 6: Final answer
   x = 20,379.71