Finding the Fourth Proportional to 11,025.72, 16,540.74 and 9,924.12

Step by Step Solution

1. Step 1: Write the proportion equation
   11,025.72 : 16,540.74 = 9,924.12 : x
2. Step 2: Convert to fraction form
   11,025.72/16,540.74 = 9,924.12/x
3. Step 3: Cross multiply
   11,025.72x = 16,540.74 × 9,924.12
4. Step 4: Simplify right side
   11,025.72x = 164,152,288.65
5. Step 5: Solve for x
   x = 164,152,288.65/11,025.72
6. Step 6: Final answer
   x = 14,888.12