Finding the Fourth Proportional to 21,657.88, 32,499.78 and 19,895.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,657.88 : 32,499.78 = 19,895.32 : x
2. Step 2: Convert to fraction form
   21,657.88/32,499.78 = 19,895.32/x
3. Step 3: Cross multiply
   21,657.88x = 32,499.78 × 19,895.32
4. Step 4: Simplify right side
   21,657.88x = 646,593,523.03
5. Step 5: Solve for x
   x = 646,593,523.03/21,657.88
6. Step 6: Final answer
   x = 29,854.89