Finding the Fourth Proportional to 16,688.10, 23,027.58 and 9,972.18

Step by Step Solution

1. Step 1: Write the proportion equation
   16,688.10 : 23,027.58 = 9,972.18 : x
2. Step 2: Convert to fraction form
   16,688.10/23,027.58 = 9,972.18/x
3. Step 3: Cross multiply
   16,688.10x = 23,027.58 × 9,972.18
4. Step 4: Simplify right side
   16,688.10x = 229,635,172.72
5. Step 5: Solve for x
   x = 229,635,172.72/16,688.10
6. Step 6: Final answer
   x = 13,760.41