Finding the Fourth Proportional to 13,182.29, 18,191.55 and 7,213.96

Step by Step Solution

1. Step 1: Write the proportion equation
   13,182.29 : 18,191.55 = 7,213.96 : x
2. Step 2: Convert to fraction form
   13,182.29/18,191.55 = 7,213.96/x
3. Step 3: Cross multiply
   13,182.29x = 18,191.55 × 7,213.96
4. Step 4: Simplify right side
   13,182.29x = 131,233,114.04
5. Step 5: Solve for x
   x = 131,233,114.04/13,182.29
6. Step 6: Final answer
   x = 9,955.26