Finding the Fourth Proportional to 13,182.30, 18,191.39 and 7,213.82

Step by Step Solution

1. Step 1: Write the proportion equation
   13,182.30 : 18,191.39 = 7,213.82 : x
2. Step 2: Convert to fraction form
   13,182.30/18,191.39 = 7,213.82/x
3. Step 3: Cross multiply
   13,182.30x = 18,191.39 × 7,213.82
4. Step 4: Simplify right side
   13,182.30x = 131,229,285.98
5. Step 5: Solve for x
   x = 131,229,285.98/13,182.30
6. Step 6: Final answer
   x = 9,954.96