Finding the Fourth Proportional to 10,251.83, 15,379.91 and 5,811.62

Step by Step Solution

1. Step 1: Write the proportion equation
   10,251.83 : 15,379.91 = 5,811.62 : x
2. Step 2: Convert to fraction form
   10,251.83/15,379.91 = 5,811.62/x
3. Step 3: Cross multiply
   10,251.83x = 15,379.91 × 5,811.62
4. Step 4: Simplify right side
   10,251.83x = 89,382,086.60
5. Step 5: Solve for x
   x = 89,382,086.60/10,251.83
6. Step 6: Final answer
   x = 8,718.65