Finding the Fourth Proportional to 10,521.54, 14,519.88 and 5,805.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,521.54 : 14,519.88 = 5,805.72 : x
2. Step 2: Convert to fraction form
   10,521.54/14,519.88 = 5,805.72/x
3. Step 3: Cross multiply
   10,521.54x = 14,519.88 × 5,805.72
4. Step 4: Simplify right side
   10,521.54x = 84,298,357.71
5. Step 5: Solve for x
   x = 84,298,357.71/10,521.54
6. Step 6: Final answer
   x = 8,011.98