Finding the Fourth Proportional to 10,521.86, 14,520.21 and 5,806.28

Step by Step Solution

1. Step 1: Write the proportion equation
   10,521.86 : 14,520.21 = 5,806.28 : x
2. Step 2: Convert to fraction form
   10,521.86/14,520.21 = 5,806.28/x
3. Step 3: Cross multiply
   10,521.86x = 14,520.21 × 5,806.28
4. Step 4: Simplify right side
   10,521.86x = 84,308,404.92
5. Step 5: Solve for x
   x = 84,308,404.92/10,521.86
6. Step 6: Final answer
   x = 8,012.69