Finding the Fourth Proportional to 12,494.67, 17,244.63 and 7,188.45

Step by Step Solution

1. Step 1: Write the proportion equation
   12,494.67 : 17,244.63 = 7,188.45 : x
2. Step 2: Convert to fraction form
   12,494.67/17,244.63 = 7,188.45/x
3. Step 3: Cross multiply
   12,494.67x = 17,244.63 × 7,188.45
4. Step 4: Simplify right side
   12,494.67x = 123,962,160.52
5. Step 5: Solve for x
   x = 123,962,160.52/12,494.67
6. Step 6: Final answer
   x = 9,921.20