Finding the Fourth Proportional to 21,856.78, 32,741.77 and 16,841.76

Step by Step Solution

1. Step 1: Write the proportion equation
   21,856.78 : 32,741.77 = 16,841.76 : x
2. Step 2: Convert to fraction form
   21,856.78/32,741.77 = 16,841.76/x
3. Step 3: Cross multiply
   21,856.78x = 32,741.77 × 16,841.76
4. Step 4: Simplify right side
   21,856.78x = 551,429,032.32
5. Step 5: Solve for x
   x = 551,429,032.32/21,856.78
6. Step 6: Final answer
   x = 25,229.20