Finding the Fourth Proportional to 21,768.52, 32,695.98 and 18,647.32

Step by Step Solution

1. Step 1: Write the proportion equation
   21,768.52 : 32,695.98 = 18,647.32 : x
2. Step 2: Convert to fraction form
   21,768.52/32,695.98 = 18,647.32/x
3. Step 3: Cross multiply
   21,768.52x = 32,695.98 × 18,647.32
4. Step 4: Simplify right side
   21,768.52x = 609,692,401.77
5. Step 5: Solve for x
   x = 609,692,401.77/21,768.52
6. Step 6: Final answer
   x = 28,007.99