Finding the Fourth Proportional to 35,152.28, 48,508.98 and 20,996.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,152.28 : 48,508.98 = 20,996.72 : x
2. Step 2: Convert to fraction form
   35,152.28/48,508.98 = 20,996.72/x
3. Step 3: Cross multiply
   35,152.28x = 48,508.98 × 20,996.72
4. Step 4: Simplify right side
   35,152.28x = 1,018,529,470.55
5. Step 5: Solve for x
   x = 1,018,529,470.55/35,152.28
6. Step 6: Final answer
   x = 28,974.78