Finding the Fourth Proportional to 37,630.77, 51,931.06 and 20,636.56

Step by Step Solution

1. Step 1: Write the proportion equation
   37,630.77 : 51,931.06 = 20,636.56 : x
2. Step 2: Convert to fraction form
   37,630.77/51,931.06 = 20,636.56/x
3. Step 3: Cross multiply
   37,630.77x = 51,931.06 × 20,636.56
4. Step 4: Simplify right side
   37,630.77x = 1,071,678,435.55
5. Step 5: Solve for x
   x = 1,071,678,435.55/37,630.77
6. Step 6: Final answer
   x = 28,478.78