Finding the Fourth Proportional to 17,287.74, 25,929.45 and 7,427.10

Step by Step Solution

1. Step 1: Write the proportion equation
   17,287.74 : 25,929.45 = 7,427.10 : x
2. Step 2: Convert to fraction form
   17,287.74/25,929.45 = 7,427.10/x
3. Step 3: Cross multiply
   17,287.74x = 25,929.45 × 7,427.10
4. Step 4: Simplify right side
   17,287.74x = 192,580,618.10
5. Step 5: Solve for x
   x = 192,580,618.10/17,287.74
6. Step 6: Final answer
   x = 11,139.72