Finding the Fourth Proportional to 13,171.48, 19,764.52 and 5,379.69

Step by Step Solution

1. Step 1: Write the proportion equation
   13,171.48 : 19,764.52 = 5,379.69 : x
2. Step 2: Convert to fraction form
   13,171.48/19,764.52 = 5,379.69/x
3. Step 3: Cross multiply
   13,171.48x = 19,764.52 × 5,379.69
4. Step 4: Simplify right side
   13,171.48x = 106,326,990.60
5. Step 5: Solve for x
   x = 106,326,990.60/13,171.48
6. Step 6: Final answer
   x = 8,072.52