Finding the Fourth Proportional to 13,199.00, 18,214.82 and 7,231.23

Step by Step Solution

1. Step 1: Write the proportion equation
   13,199.00 : 18,214.82 = 7,231.23 : x
2. Step 2: Convert to fraction form
   13,199.00/18,214.82 = 7,231.23/x
3. Step 3: Cross multiply
   13,199.00x = 18,214.82 × 7,231.23
4. Step 4: Simplify right side
   13,199.00x = 131,715,516.67
5. Step 5: Solve for x
   x = 131,715,516.67/13,199.00
6. Step 6: Final answer
   x = 9,979.21