Finding the Fourth Proportional to 16,697.42, 23,047.56 and 9,628.55

Step by Step Solution

1. Step 1: Write the proportion equation
   16,697.42 : 23,047.56 = 9,628.55 : x
2. Step 2: Convert to fraction form
   16,697.42/23,047.56 = 9,628.55/x
3. Step 3: Cross multiply
   16,697.42x = 23,047.56 × 9,628.55
4. Step 4: Simplify right side
   16,697.42x = 221,914,468.60
5. Step 5: Solve for x
   x = 221,914,468.60/16,697.42
6. Step 6: Final answer
   x = 13,290.35