Finding the Fourth Proportional to 12,492.43, 17,240.07 and 7,187.27

Step by Step Solution

1. Step 1: Write the proportion equation
   12,492.43 : 17,240.07 = 7,187.27 : x
2. Step 2: Convert to fraction form
   12,492.43/17,240.07 = 7,187.27/x
3. Step 3: Cross multiply
   12,492.43x = 17,240.07 × 7,187.27
4. Step 4: Simplify right side
   12,492.43x = 123,908,978.66
5. Step 5: Solve for x
   x = 123,908,978.66/12,492.43
6. Step 6: Final answer
   x = 9,918.73