Finding the Fourth Proportional to 12,454.31, 17,187.68 and 7,150.84

Step by Step Solution

1. Step 1: Write the proportion equation
   12,454.31 : 17,187.68 = 7,150.84 : x
2. Step 2: Convert to fraction form
   12,454.31/17,187.68 = 7,150.84/x
3. Step 3: Cross multiply
   12,454.31x = 17,187.68 × 7,150.84
4. Step 4: Simplify right side
   12,454.31x = 122,906,349.65
5. Step 5: Solve for x
   x = 122,906,349.65/12,454.31
6. Step 6: Final answer
   x = 9,868.58