Finding the Fourth Proportional to 13,099.82, 18,078.18 and 7,434.81

Step by Step Solution

1. Step 1: Write the proportion equation
   13,099.82 : 18,078.18 = 7,434.81 : x
2. Step 2: Convert to fraction form
   13,099.82/18,078.18 = 7,434.81/x
3. Step 3: Cross multiply
   13,099.82x = 18,078.18 × 7,434.81
4. Step 4: Simplify right side
   13,099.82x = 134,407,833.45
5. Step 5: Solve for x
   x = 134,407,833.45/13,099.82
6. Step 6: Final answer
   x = 10,260.28