Finding the Fourth Proportional to 21,165.63, 29,185.83 and 17,845.05

Step by Step Solution

1. Step 1: Write the proportion equation
   21,165.63 : 29,185.83 = 17,845.05 : x
2. Step 2: Convert to fraction form
   21,165.63/29,185.83 = 17,845.05/x
3. Step 3: Cross multiply
   21,165.63x = 29,185.83 × 17,845.05
4. Step 4: Simplify right side
   21,165.63x = 520,822,595.64
5. Step 5: Solve for x
   x = 520,822,595.64/21,165.63
6. Step 6: Final answer
   x = 24,607.00