Finding the Fourth Proportional to 21,155.23, 29,127.63 and 17,962.21

Step by Step Solution

1. Step 1: Write the proportion equation
   21,155.23 : 29,127.63 = 17,962.21 : x
2. Step 2: Convert to fraction form
   21,155.23/29,127.63 = 17,962.21/x
3. Step 3: Cross multiply
   21,155.23x = 29,127.63 × 17,962.21
4. Step 4: Simplify right side
   21,155.23x = 523,196,606.86
5. Step 5: Solve for x
   x = 523,196,606.86/21,155.23
6. Step 6: Final answer
   x = 24,731.31