Finding the Fourth Proportional to 12,458.72, 17,192.28 and 7,153.04

Step by Step Solution

1. Step 1: Write the proportion equation
   12,458.72 : 17,192.28 = 7,153.04 : x
2. Step 2: Convert to fraction form
   12,458.72/17,192.28 = 7,153.04/x
3. Step 3: Cross multiply
   12,458.72x = 17,192.28 × 7,153.04
4. Step 4: Simplify right side
   12,458.72x = 122,977,066.53
5. Step 5: Solve for x
   x = 122,977,066.53/12,458.72
6. Step 6: Final answer
   x = 9,870.76