Finding the Fourth Proportional to 11,819.72, 17,737.78 and 7,649.34

Step by Step Solution

1. Step 1: Write the proportion equation
   11,819.72 : 17,737.78 = 7,649.34 : x
2. Step 2: Convert to fraction form
   11,819.72/17,737.78 = 7,649.34/x
3. Step 3: Cross multiply
   11,819.72x = 17,737.78 × 7,649.34
4. Step 4: Simplify right side
   11,819.72x = 135,682,310.07
5. Step 5: Solve for x
   x = 135,682,310.07/11,819.72
6. Step 6: Final answer
   x = 11,479.32