Finding the Fourth Proportional to 12,327.16, 17,009.58 and 7,021.30

Step by Step Solution

1. Step 1: Write the proportion equation
   12,327.16 : 17,009.58 = 7,021.30 : x
2. Step 2: Convert to fraction form
   12,327.16/17,009.58 = 7,021.30/x
3. Step 3: Cross multiply
   12,327.16x = 17,009.58 × 7,021.30
4. Step 4: Simplify right side
   12,327.16x = 119,429,364.05
5. Step 5: Solve for x
   x = 119,429,364.05/12,327.16
6. Step 6: Final answer
   x = 9,688.31