Finding the Fourth Proportional to 35,356.96, 48,801.72 and 21,920.32

Step by Step Solution

1. Step 1: Write the proportion equation
   35,356.96 : 48,801.72 = 21,920.32 : x
2. Step 2: Convert to fraction form
   35,356.96/48,801.72 = 21,920.32/x
3. Step 3: Cross multiply
   35,356.96x = 48,801.72 × 21,920.32
4. Step 4: Simplify right side
   35,356.96x = 1,069,749,318.95
5. Step 5: Solve for x
   x = 1,069,749,318.95/35,356.96
6. Step 6: Final answer
   x = 30,255.69