Finding the Fourth Proportional to 37,917.72, 52,327.01 and 20,921.69

Step by Step Solution

1. Step 1: Write the proportion equation
   37,917.72 : 52,327.01 = 20,921.69 : x
2. Step 2: Convert to fraction form
   37,917.72/52,327.01 = 20,921.69/x
3. Step 3: Cross multiply
   37,917.72x = 52,327.01 × 20,921.69
4. Step 4: Simplify right side
   37,917.72x = 1,094,769,664.97
5. Step 5: Solve for x
   x = 1,094,769,664.97/37,917.72
6. Step 6: Final answer
   x = 28,872.24