Finding the Fourth Proportional to 13,951.72, 19,253.37 and 7,664.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,951.72 : 19,253.37 = 7,664.09 : x
2. Step 2: Convert to fraction form
   13,951.72/19,253.37 = 7,664.09/x
3. Step 3: Cross multiply
   13,951.72x = 19,253.37 × 7,664.09
4. Step 4: Simplify right side
   13,951.72x = 147,559,560.48
5. Step 5: Solve for x
   x = 147,559,560.48/13,951.72
6. Step 6: Final answer
   x = 10,576.44