Finding the Fourth Proportional to 12,459.45, 17,192.61 and 7,422.96

Step by Step Solution

1. Step 1: Write the proportion equation
   12,459.45 : 17,192.61 = 7,422.96 : x
2. Step 2: Convert to fraction form
   12,459.45/17,192.61 = 7,422.96/x
3. Step 3: Cross multiply
   12,459.45x = 17,192.61 × 7,422.96
4. Step 4: Simplify right side
   12,459.45x = 127,620,056.33
5. Step 5: Solve for x
   x = 127,620,056.33/12,459.45
6. Step 6: Final answer
   x = 10,242.83