Finding the Fourth Proportional to 12,820.72, 19,233.60 and 5,029.60

Step by Step Solution

1. Step 1: Write the proportion equation
   12,820.72 : 19,233.60 = 5,029.60 : x
2. Step 2: Convert to fraction form
   12,820.72/19,233.60 = 5,029.60/x
3. Step 3: Cross multiply
   12,820.72x = 19,233.60 × 5,029.60
4. Step 4: Simplify right side
   12,820.72x = 96,737,314.56
5. Step 5: Solve for x
   x = 96,737,314.56/12,820.72
6. Step 6: Final answer
   x = 7,545.39