Finding the Fourth Proportional to 16,973.62, 23,423.56 and 9,420.04

Step by Step Solution

1. Step 1: Write the proportion equation
   16,973.62 : 23,423.56 = 9,420.04 : x
2. Step 2: Convert to fraction form
   16,973.62/23,423.56 = 9,420.04/x
3. Step 3: Cross multiply
   16,973.62x = 23,423.56 × 9,420.04
4. Step 4: Simplify right side
   16,973.62x = 220,650,801.81
5. Step 5: Solve for x
   x = 220,650,801.81/16,973.62
6. Step 6: Final answer
   x = 12,999.63