Finding the Fourth Proportional to 10,238.72, 15,345.30 and 4,388.54

Step by Step Solution

1. Step 1: Write the proportion equation
   10,238.72 : 15,345.30 = 4,388.54 : x
2. Step 2: Convert to fraction form
   10,238.72/15,345.30 = 4,388.54/x
3. Step 3: Cross multiply
   10,238.72x = 15,345.30 × 4,388.54
4. Step 4: Simplify right side
   10,238.72x = 67,343,462.86
5. Step 5: Solve for x
   x = 67,343,462.86/10,238.72
6. Step 6: Final answer
   x = 6,577.33