Finding the Fourth Proportional to 17,005.67, 25,482.55 and 7,139.60

Step by Step Solution

1. Step 1: Write the proportion equation
   17,005.67 : 25,482.55 = 7,139.60 : x
2. Step 2: Convert to fraction form
   17,005.67/25,482.55 = 7,139.60/x
3. Step 3: Cross multiply
   17,005.67x = 25,482.55 × 7,139.60
4. Step 4: Simplify right side
   17,005.67x = 181,935,178.28
5. Step 5: Solve for x
   x = 181,935,178.28/17,005.67
6. Step 6: Final answer
   x = 10,698.50