Finding the Fourth Proportional to 17,007.56, 25,505.67 and 7,145

Step by Step Solution

1. Step 1: Write the proportion equation
   17,007.56 : 25,505.67 = 7,145 : x
2. Step 2: Convert to fraction form
   17,007.56/25,505.67 = 7,145/x
3. Step 3: Cross multiply
   17,007.56x = 25,505.67 × 7,145
4. Step 4: Simplify right side
   17,007.56x = 182,238,012.15
5. Step 5: Solve for x
   x = 182,238,012.15/17,007.56
6. Step 6: Final answer
   x = 10,715.12