Finding the Fourth Proportional to 35,665.07, 49,213.61 and 20,557.56

Step by Step Solution

1. Step 1: Write the proportion equation
   35,665.07 : 49,213.61 = 20,557.56 : x
2. Step 2: Convert to fraction form
   35,665.07/49,213.61 = 20,557.56/x
3. Step 3: Cross multiply
   35,665.07x = 49,213.61 × 20,557.56
4. Step 4: Simplify right side
   35,665.07x = 1,011,711,791.79
5. Step 5: Solve for x
   x = 1,011,711,791.79/35,665.07
6. Step 6: Final answer
   x = 28,367.02