Finding the Fourth Proportional to 10,351.78, 14,285.49 and 5,636.06

Step by Step Solution

1. Step 1: Write the proportion equation
   10,351.78 : 14,285.49 = 5,636.06 : x
2. Step 2: Convert to fraction form
   10,351.78/14,285.49 = 5,636.06/x
3. Step 3: Cross multiply
   10,351.78x = 14,285.49 × 5,636.06
4. Step 4: Simplify right side
   10,351.78x = 80,513,878.77
5. Step 5: Solve for x
   x = 80,513,878.77/10,351.78
6. Step 6: Final answer
   x = 7,777.78