Finding the Fourth Proportional to 9,003.72, 12,423.41 and 7,664.36

Step by Step Solution

1. Step 1: Write the proportion equation
   9,003.72 : 12,423.41 = 7,664.36 : x
2. Step 2: Convert to fraction form
   9,003.72/12,423.41 = 7,664.36/x
3. Step 3: Cross multiply
   9,003.72x = 12,423.41 × 7,664.36
4. Step 4: Simplify right side
   9,003.72x = 95,217,414.97
5. Step 5: Solve for x
   x = 95,217,414.97/9,003.72
6. Step 6: Final answer
   x = 10,575.34