Finding the Fourth Proportional to 37,642.16, 51,945.82 and 20,646.05

Step by Step Solution

1. Step 1: Write the proportion equation
   37,642.16 : 51,945.82 = 20,646.05 : x
2. Step 2: Convert to fraction form
   37,642.16/51,945.82 = 20,646.05/x
3. Step 3: Cross multiply
   37,642.16x = 51,945.82 × 20,646.05
4. Step 4: Simplify right side
   37,642.16x = 1,072,475,997.01
5. Step 5: Solve for x
   x = 1,072,475,997.01/37,642.16
6. Step 6: Final answer
   x = 28,491.35