Finding the Fourth Proportional to 14,258.48, 19,667.43 and 9,145.91

Step by Step Solution

1. Step 1: Write the proportion equation
   14,258.48 : 19,667.43 = 9,145.91 : x
2. Step 2: Convert to fraction form
   14,258.48/19,667.43 = 9,145.91/x
3. Step 3: Cross multiply
   14,258.48x = 19,667.43 × 9,145.91
4. Step 4: Simplify right side
   14,258.48x = 179,876,480.67
5. Step 5: Solve for x
   x = 179,876,480.67/14,258.48
6. Step 6: Final answer
   x = 12,615.40