Finding the Fourth Proportional to 10,358.78, 15,524.33 and 3,778.78

Step by Step Solution

1. Step 1: Write the proportion equation
   10,358.78 : 15,524.33 = 3,778.78 : x
2. Step 2: Convert to fraction form
   10,358.78/15,524.33 = 3,778.78/x
3. Step 3: Cross multiply
   10,358.78x = 15,524.33 × 3,778.78
4. Step 4: Simplify right side
   10,358.78x = 58,663,027.72
5. Step 5: Solve for x
   x = 58,663,027.72/10,358.78
6. Step 6: Final answer
   x = 5,663.12