Finding the Fourth Proportional to 12,422.50, 17,138.18 and 7,114.46

Step by Step Solution

1. Step 1: Write the proportion equation
   12,422.50 : 17,138.18 = 7,114.46 : x
2. Step 2: Convert to fraction form
   12,422.50/17,138.18 = 7,114.46/x
3. Step 3: Cross multiply
   12,422.50x = 17,138.18 × 7,114.46
4. Step 4: Simplify right side
   12,422.50x = 121,928,896.08
5. Step 5: Solve for x
   x = 121,928,896.08/12,422.50
6. Step 6: Final answer
   x = 9,815.17