Finding the Fourth Proportional to 10,707.72, 14,777.46 and 5,991.90

Step by Step Solution

1. Step 1: Write the proportion equation
   10,707.72 : 14,777.46 = 5,991.90 : x
2. Step 2: Convert to fraction form
   10,707.72/14,777.46 = 5,991.90/x
3. Step 3: Cross multiply
   10,707.72x = 14,777.46 × 5,991.90
4. Step 4: Simplify right side
   10,707.72x = 88,545,062.57
5. Step 5: Solve for x
   x = 88,545,062.57/10,707.72
6. Step 6: Final answer
   x = 8,269.27