Finding the Fourth Proportional to 13,099.34, 18,093.40 and 9,508.61

Step by Step Solution

1. Step 1: Write the proportion equation
   13,099.34 : 18,093.40 = 9,508.61 : x
2. Step 2: Convert to fraction form
   13,099.34/18,093.40 = 9,508.61/x
3. Step 3: Cross multiply
   13,099.34x = 18,093.40 × 9,508.61
4. Step 4: Simplify right side
   13,099.34x = 172,043,105.64
5. Step 5: Solve for x
   x = 172,043,105.64/13,099.34
6. Step 6: Final answer
   x = 13,133.72