Finding the Fourth Proportional to 35,802.79, 49,401.34 and 20,689.91

Step by Step Solution

1. Step 1: Write the proportion equation
   35,802.79 : 49,401.34 = 20,689.91 : x
2. Step 2: Convert to fraction form
   35,802.79/49,401.34 = 20,689.91/x
3. Step 3: Cross multiply
   35,802.79x = 49,401.34 × 20,689.91
4. Step 4: Simplify right side
   35,802.79x = 1,022,109,350.26
5. Step 5: Solve for x
   x = 1,022,109,350.26/35,802.79
6. Step 6: Final answer
   x = 28,548.31