Finding the Fourth Proportional to 16,941.90, 23,380.56 and 9,388.21

Step by Step Solution

1. Step 1: Write the proportion equation
   16,941.90 : 23,380.56 = 9,388.21 : x
2. Step 2: Convert to fraction form
   16,941.90/23,380.56 = 9,388.21/x
3. Step 3: Cross multiply
   16,941.90x = 23,380.56 × 9,388.21
4. Step 4: Simplify right side
   16,941.90x = 219,501,443.35
5. Step 5: Solve for x
   x = 219,501,443.35/16,941.90
6. Step 6: Final answer
   x = 12,956.13