Finding the Fourth Proportional to 12,145.31, 16,760.59 and 7,108.55

Step by Step Solution

1. Step 1: Write the proportion equation
   12,145.31 : 16,760.59 = 7,108.55 : x
2. Step 2: Convert to fraction form
   12,145.31/16,760.59 = 7,108.55/x
3. Step 3: Cross multiply
   12,145.31x = 16,760.59 × 7,108.55
4. Step 4: Simplify right side
   12,145.31x = 119,143,492.04
5. Step 5: Solve for x
   x = 119,143,492.04/12,145.31
6. Step 6: Final answer
   x = 9,809.84