Finding the Fourth Proportional to 12,614.87, 17,408.16 and 7,238.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,614.87 : 17,408.16 = 7,238.21 : x
2. Step 2: Convert to fraction form
   12,614.87/17,408.16 = 7,238.21/x
3. Step 3: Cross multiply
   12,614.87x = 17,408.16 × 7,238.21
4. Step 4: Simplify right side
   12,614.87x = 126,003,917.79
5. Step 5: Solve for x
   x = 126,003,917.79/12,614.87
6. Step 6: Final answer
   x = 9,988.52