Finding the Fourth Proportional to 21,855.86, 32,659.36 and 16,410.72

Step by Step Solution

1. Step 1: Write the proportion equation
   21,855.86 : 32,659.36 = 16,410.72 : x
2. Step 2: Convert to fraction form
   21,855.86/32,659.36 = 16,410.72/x
3. Step 3: Cross multiply
   21,855.86x = 32,659.36 × 16,410.72
4. Step 4: Simplify right side
   21,855.86x = 535,963,571.31
5. Step 5: Solve for x
   x = 535,963,571.31/21,855.86
6. Step 6: Final answer
   x = 24,522.65