Finding the Fourth Proportional to 10,782.88, 16,174.31 and 2,991.69

Step by Step Solution

1. Step 1: Write the proportion equation
   10,782.88 : 16,174.31 = 2,991.69 : x
2. Step 2: Convert to fraction form
   10,782.88/16,174.31 = 2,991.69/x
3. Step 3: Cross multiply
   10,782.88x = 16,174.31 × 2,991.69
4. Step 4: Simplify right side
   10,782.88x = 48,388,521.48
5. Step 5: Solve for x
   x = 48,388,521.48/10,782.88
6. Step 6: Final answer
   x = 4,487.53