Finding the Fourth Proportional to 12,490.25, 17,237.04 and 7,185.06

Step by Step Solution

1. Step 1: Write the proportion equation
   12,490.25 : 17,237.04 = 7,185.06 : x
2. Step 2: Convert to fraction form
   12,490.25/17,237.04 = 7,185.06/x
3. Step 3: Cross multiply
   12,490.25x = 17,237.04 × 7,185.06
4. Step 4: Simplify right side
   12,490.25x = 123,849,166.62
5. Step 5: Solve for x
   x = 123,849,166.62/12,490.25
6. Step 6: Final answer
   x = 9,915.67