Finding the Fourth Proportional to 12,495.51, 17,244.56 and 7,190.21

Step by Step Solution

1. Step 1: Write the proportion equation
   12,495.51 : 17,244.56 = 7,190.21 : x
2. Step 2: Convert to fraction form
   12,495.51/17,244.56 = 7,190.21/x
3. Step 3: Cross multiply
   12,495.51x = 17,244.56 × 7,190.21
4. Step 4: Simplify right side
   12,495.51x = 123,992,007.76
5. Step 5: Solve for x
   x = 123,992,007.76/12,495.51
6. Step 6: Final answer
   x = 9,922.92