Finding the Fourth Proportional to 37,659.89, 51,970.64 and 20,664.25

Step by Step Solution

1. Step 1: Write the proportion equation
   37,659.89 : 51,970.64 = 20,664.25 : x
2. Step 2: Convert to fraction form
   37,659.89/51,970.64 = 20,664.25/x
3. Step 3: Cross multiply
   37,659.89x = 51,970.64 × 20,664.25
4. Step 4: Simplify right side
   37,659.89x = 1,073,934,064.37
5. Step 5: Solve for x
   x = 1,073,934,064.37/37,659.89
6. Step 6: Final answer
   x = 28,516.65