Finding the Fourth Proportional to 16,973.55, 23,421.57 and 9,417.91

Step by Step Solution

1. Step 1: Write the proportion equation
   16,973.55 : 23,421.57 = 9,417.91 : x
2. Step 2: Convert to fraction form
   16,973.55/23,421.57 = 9,417.91/x
3. Step 3: Cross multiply
   16,973.55x = 23,421.57 × 9,417.91
4. Step 4: Simplify right side
   16,973.55x = 220,582,261.86
5. Step 5: Solve for x
   x = 220,582,261.86/16,973.55
6. Step 6: Final answer
   x = 12,995.65