Finding the Fourth Proportional to 21,718.38, 32,617.69 and 13,006.83

Step by Step Solution

1. Step 1: Write the proportion equation
   21,718.38 : 32,617.69 = 13,006.83 : x
2. Step 2: Convert to fraction form
   21,718.38/32,617.69 = 13,006.83/x
3. Step 3: Cross multiply
   21,718.38x = 32,617.69 × 13,006.83
4. Step 4: Simplify right side
   21,718.38x = 424,252,655.15
5. Step 5: Solve for x
   x = 424,252,655.15/21,718.38
6. Step 6: Final answer
   x = 19,534.27