Finding the Fourth Proportional to 14,453.59, 21,679.89 and 6,128.25

Step by Step Solution

1. Step 1: Write the proportion equation
   14,453.59 : 21,679.89 = 6,128.25 : x
2. Step 2: Convert to fraction form
   14,453.59/21,679.89 = 6,128.25/x
3. Step 3: Cross multiply
   14,453.59x = 21,679.89 × 6,128.25
4. Step 4: Simplify right side
   14,453.59x = 132,859,785.89
5. Step 5: Solve for x
   x = 132,859,785.89/14,453.59
6. Step 6: Final answer
   x = 9,192.17