Finding the Fourth Proportional to 37,308.81, 51,490.56 and 20,958.72

Step by Step Solution

1. Step 1: Write the proportion equation
   37,308.81 : 51,490.56 = 20,958.72 : x
2. Step 2: Convert to fraction form
   37,308.81/51,490.56 = 20,958.72/x
3. Step 3: Cross multiply
   37,308.81x = 51,490.56 × 20,958.72
4. Step 4: Simplify right side
   37,308.81x = 1,079,176,229.68
5. Step 5: Solve for x
   x = 1,079,176,229.68/37,308.81
6. Step 6: Final answer
   x = 28,925.51