Finding the Fourth Proportional to 13,167.56, 18,171.24 and 7,199.27

Step by Step Solution

1. Step 1: Write the proportion equation
   13,167.56 : 18,171.24 = 7,199.27 : x
2. Step 2: Convert to fraction form
   13,167.56/18,171.24 = 7,199.27/x
3. Step 3: Cross multiply
   13,167.56x = 18,171.24 × 7,199.27
4. Step 4: Simplify right side
   13,167.56x = 130,819,702.72
5. Step 5: Solve for x
   x = 130,819,702.72/13,167.56
6. Step 6: Final answer
   x = 9,935.00