Finding the Fourth Proportional to 11,451.83, 15,794.78 and 9,861.24

Step by Step Solution

1. Step 1: Write the proportion equation
   11,451.83 : 15,794.78 = 9,861.24 : x
2. Step 2: Convert to fraction form
   11,451.83/15,794.78 = 9,861.24/x
3. Step 3: Cross multiply
   11,451.83x = 15,794.78 × 9,861.24
4. Step 4: Simplify right side
   11,451.83x = 155,756,181.72
5. Step 5: Solve for x
   x = 155,756,181.72/11,451.83
6. Step 6: Final answer
   x = 13,600.99