Finding the Fourth Proportional to 11,901.72, 17,842.50 and 7,275

Step by Step Solution

1. Step 1: Write the proportion equation
   11,901.72 : 17,842.50 = 7,275 : x
2. Step 2: Convert to fraction form
   11,901.72/17,842.50 = 7,275/x
3. Step 3: Cross multiply
   11,901.72x = 17,842.50 × 7,275
4. Step 4: Simplify right side
   11,901.72x = 129,804,187.50
5. Step 5: Solve for x
   x = 129,804,187.50/11,901.72
6. Step 6: Final answer
   x = 10,906.34