Finding the Fourth Proportional to 13,162.56, 18,164.78 and 7,498.14

Step by Step Solution

1. Step 1: Write the proportion equation
   13,162.56 : 18,164.78 = 7,498.14 : x
2. Step 2: Convert to fraction form
   13,162.56/18,164.78 = 7,498.14/x
3. Step 3: Cross multiply
   13,162.56x = 18,164.78 × 7,498.14
4. Step 4: Simplify right side
   13,162.56x = 136,202,063.51
5. Step 5: Solve for x
   x = 136,202,063.51/13,162.56
6. Step 6: Final answer
   x = 10,347.69