Finding the Fourth Proportional to 13,049.92, 18,008.90 and 7,081.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,049.92 : 18,008.90 = 7,081.69 : x
2. Step 2: Convert to fraction form
   13,049.92/18,008.90 = 7,081.69/x
3. Step 3: Cross multiply
   13,049.92x = 18,008.90 × 7,081.69
4. Step 4: Simplify right side
   13,049.92x = 127,533,419.72
5. Step 5: Solve for x
   x = 127,533,419.72/13,049.92
6. Step 6: Final answer
   x = 9,772.74