Finding the Fourth Proportional to 9,179.72, 12,663.50 and 5,991.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,179.72 : 12,663.50 = 5,991.54 : x
2. Step 2: Convert to fraction form
   9,179.72/12,663.50 = 5,991.54/x
3. Step 3: Cross multiply
   9,179.72x = 12,663.50 × 5,991.54
4. Step 4: Simplify right side
   9,179.72x = 75,873,789.34
5. Step 5: Solve for x
   x = 75,873,789.34/9,179.72
6. Step 6: Final answer
   x = 8,265.37