Finding the Fourth Proportional to 13,174.06, 18,171.89 and 9,193.72

Step by Step Solution

1. Step 1: Write the proportion equation
   13,174.06 : 18,171.89 = 9,193.72 : x
2. Step 2: Convert to fraction form
   13,174.06/18,171.89 = 9,193.72/x
3. Step 3: Cross multiply
   13,174.06x = 18,171.89 × 9,193.72
4. Step 4: Simplify right side
   13,174.06x = 167,067,268.53
5. Step 5: Solve for x
   x = 167,067,268.53/13,174.06
6. Step 6: Final answer
   x = 12,681.53