Finding the Fourth Proportional to 21,776.82, 32,685.27 and 13,473.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,776.82 : 32,685.27 = 13,473.05 : x
2. Step 2: Convert to fraction form
   21,776.82/32,685.27 = 13,473.05/x
3. Step 3: Cross multiply
   21,776.82x = 32,685.27 × 13,473.05
4. Step 4: Simplify right side
   21,776.82x = 440,370,322.66
5. Step 5: Solve for x
   x = 440,370,322.66/21,776.82
6. Step 6: Final answer
   x = 20,221.98