Finding the Fourth Proportional to 12,492.37, 17,240.24 and 7,187.07

Step by Step Solution

1. Step 1: Write the proportion equation
   12,492.37 : 17,240.24 = 7,187.07 : x
2. Step 2: Convert to fraction form
   12,492.37/17,240.24 = 7,187.07/x
3. Step 3: Cross multiply
   12,492.37x = 17,240.24 × 7,187.07
4. Step 4: Simplify right side
   12,492.37x = 123,906,894.32
5. Step 5: Solve for x
   x = 123,906,894.32/12,492.37
6. Step 6: Final answer
   x = 9,918.60