Finding the Fourth Proportional to 17,061.10, 23,623.05 and 16,623.70

Step by Step Solution

1. Step 1: Write the proportion equation
   17,061.10 : 23,623.05 = 16,623.70 : x
2. Step 2: Convert to fraction form
   17,061.10/23,623.05 = 16,623.70/x
3. Step 3: Cross multiply
   17,061.10x = 23,623.05 × 16,623.70
4. Step 4: Simplify right side
   17,061.10x = 392,702,496.29
5. Step 5: Solve for x
   x = 392,702,496.29/17,061.10
6. Step 6: Final answer
   x = 23,017.42