Finding the Fourth Proportional to 16,993.71, 25,498.91 and 7,640.33

Step by Step Solution

1. Step 1: Write the proportion equation
   16,993.71 : 25,498.91 = 7,640.33 : x
2. Step 2: Convert to fraction form
   16,993.71/25,498.91 = 7,640.33/x
3. Step 3: Cross multiply
   16,993.71x = 25,498.91 × 7,640.33
4. Step 4: Simplify right side
   16,993.71x = 194,819,921.34
5. Step 5: Solve for x
   x = 194,819,921.34/16,993.71
6. Step 6: Final answer
   x = 11,464.24