Finding the Fourth Proportional to 35,039.72, 48,355.30 and 20,900.76

Step by Step Solution

1. Step 1: Write the proportion equation
   35,039.72 : 48,355.30 = 20,900.76 : x
2. Step 2: Convert to fraction form
   35,039.72/48,355.30 = 20,900.76/x
3. Step 3: Cross multiply
   35,039.72x = 48,355.30 × 20,900.76
4. Step 4: Simplify right side
   35,039.72x = 1,010,662,520.03
5. Step 5: Solve for x
   x = 1,010,662,520.03/35,039.72
6. Step 6: Final answer
   x = 28,843.34