Finding the Fourth Proportional to 8,777.86, 12,101.61 and 5,628.58

Step by Step Solution

1. Step 1: Write the proportion equation
   8,777.86 : 12,101.61 = 5,628.58 : x
2. Step 2: Convert to fraction form
   8,777.86/12,101.61 = 5,628.58/x
3. Step 3: Cross multiply
   8,777.86x = 12,101.61 × 5,628.58
4. Step 4: Simplify right side
   8,777.86x = 68,114,880.01
5. Step 5: Solve for x
   x = 68,114,880.01/8,777.86
6. Step 6: Final answer
   x = 7,759.85