Finding the Fourth Proportional to 12,458.85, 17,192.56 and 7,743.03

Step by Step Solution

1. Step 1: Write the proportion equation
   12,458.85 : 17,192.56 = 7,743.03 : x
2. Step 2: Convert to fraction form
   12,458.85/17,192.56 = 7,743.03/x
3. Step 3: Cross multiply
   12,458.85x = 17,192.56 × 7,743.03
4. Step 4: Simplify right side
   12,458.85x = 133,122,507.86
5. Step 5: Solve for x
   x = 133,122,507.86/12,458.85
6. Step 6: Final answer
   x = 10,684.98