Finding the Fourth Proportional to 12,457.47, 17,192.16 and 7,614.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,457.47 : 17,192.16 = 7,614.28 : x
2. Step 2: Convert to fraction form
   12,457.47/17,192.16 = 7,614.28/x
3. Step 3: Cross multiply
   12,457.47x = 17,192.16 × 7,614.28
4. Step 4: Simplify right side
   12,457.47x = 130,905,920.04
5. Step 5: Solve for x
   x = 130,905,920.04/12,457.47
6. Step 6: Final answer
   x = 10,508.23