Finding the Fourth Proportional to 12,147.37, 16,767.56 and 7,113.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,147.37 : 16,767.56 = 7,113.21 : x
2. Step 2: Convert to fraction form
   12,147.37/16,767.56 = 7,113.21/x
3. Step 3: Cross multiply
   12,147.37x = 16,767.56 × 7,113.21
4. Step 4: Simplify right side
   12,147.37x = 119,271,175.47
5. Step 5: Solve for x
   x = 119,271,175.47/12,147.37
6. Step 6: Final answer
   x = 9,818.68