Finding the Fourth Proportional to 37,665.65, 51,978.44 and 20,670.17

Step by Step Solution

1. Step 1: Write the proportion equation
   37,665.65 : 51,978.44 = 20,670.17 : x
2. Step 2: Convert to fraction form
   37,665.65/51,978.44 = 20,670.17/x
3. Step 3: Cross multiply
   37,665.65x = 51,978.44 × 20,670.17
4. Step 4: Simplify right side
   37,665.65x = 1,074,403,087.78
5. Step 5: Solve for x
   x = 1,074,403,087.78/37,665.65
6. Step 6: Final answer
   x = 28,524.75