Finding the Fourth Proportional to 37,664.52, 51,976.64 and 20,668.91

Step by Step Solution

1. Step 1: Write the proportion equation
   37,664.52 : 51,976.64 = 20,668.91 : x
2. Step 2: Convert to fraction form
   37,664.52/51,976.64 = 20,668.91/x
3. Step 3: Cross multiply
   37,664.52x = 51,976.64 × 20,668.91
4. Step 4: Simplify right side
   37,664.52x = 1,074,300,131.03
5. Step 5: Solve for x
   x = 1,074,300,131.03/37,664.52
6. Step 6: Final answer
   x = 28,522.87