Finding the Fourth Proportional to 11,698.72, 17,528.28 and 7,072

Step by Step Solution

1. Step 1: Write the proportion equation
   11,698.72 : 17,528.28 = 7,072 : x
2. Step 2: Convert to fraction form
   11,698.72/17,528.28 = 7,072/x
3. Step 3: Cross multiply
   11,698.72x = 17,528.28 × 7,072
4. Step 4: Simplify right side
   11,698.72x = 123,959,996.16
5. Step 5: Solve for x
   x = 123,959,996.16/11,698.72
6. Step 6: Final answer
   x = 10,596.03