Finding the Fourth Proportional to 10,134.17, 13,986.57 and 5,658.21

Step by Step Solution

1. Step 1: Write the proportion equation
   10,134.17 : 13,986.57 = 5,658.21 : x
2. Step 2: Convert to fraction form
   10,134.17/13,986.57 = 5,658.21/x
3. Step 3: Cross multiply
   10,134.17x = 13,986.57 × 5,658.21
4. Step 4: Simplify right side
   10,134.17x = 79,138,950.24
5. Step 5: Solve for x
   x = 79,138,950.24/10,134.17
6. Step 6: Final answer
   x = 7,809.12