Finding the Fourth Proportional to 21,636.69, 32,456.18 and 9,155.00

Step by Step Solution

1. Step 1: Write the proportion equation
   21,636.69 : 32,456.18 = 9,155.00 : x
2. Step 2: Convert to fraction form
   21,636.69/32,456.18 = 9,155.00/x
3. Step 3: Cross multiply
   21,636.69x = 32,456.18 × 9,155.00
4. Step 4: Simplify right side
   21,636.69x = 297,136,119.84
5. Step 5: Solve for x
   x = 297,136,119.84/21,636.69
6. Step 6: Final answer
   x = 13,732.97