Finding the Fourth Proportional to 13,174.82, 18,181.52 and 7,206.88

Step by Step Solution

1. Step 1: Write the proportion equation
   13,174.82 : 18,181.52 = 7,206.88 : x
2. Step 2: Convert to fraction form
   13,174.82/18,181.52 = 7,206.88/x
3. Step 3: Cross multiply
   13,174.82x = 18,181.52 × 7,206.88
4. Step 4: Simplify right side
   13,174.82x = 131,032,032.86
5. Step 5: Solve for x
   x = 131,032,032.86/13,174.82
6. Step 6: Final answer
   x = 9,945.64