Finding the Fourth Proportional to 35,835.60, 49,452.16 and 19,920.72

Step by Step Solution

1. Step 1: Write the proportion equation
   35,835.60 : 49,452.16 = 19,920.72 : x
2. Step 2: Convert to fraction form
   35,835.60/49,452.16 = 19,920.72/x
3. Step 3: Cross multiply
   35,835.60x = 49,452.16 × 19,920.72
4. Step 4: Simplify right side
   35,835.60x = 985,122,632.76
5. Step 5: Solve for x
   x = 985,122,632.76/35,835.60
6. Step 6: Final answer
   x = 27,490.06