Finding the Fourth Proportional to 21,947.99, 32,857.72 and 13,602.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,947.99 : 32,857.72 = 13,602.83 : x
2. Step 2: Convert to fraction form
   21,947.99/32,857.72 = 13,602.83/x
3. Step 3: Cross multiply
   21,947.99x = 32,857.72 × 13,602.83
4. Step 4: Simplify right side
   21,947.99x = 446,957,781.05
5. Step 5: Solve for x
   x = 446,957,781.05/21,947.99
6. Step 6: Final answer
   x = 20,364.41