Finding the Fourth Proportional to 12,776.52, 17,607 and 8,522.76

Step by Step Solution

1. Step 1: Write the proportion equation
   12,776.52 : 17,607 = 8,522.76 : x
2. Step 2: Convert to fraction form
   12,776.52/17,607 = 8,522.76/x
3. Step 3: Cross multiply
   12,776.52x = 17,607 × 8,522.76
4. Step 4: Simplify right side
   12,776.52x = 150,060,235.32
5. Step 5: Solve for x
   x = 150,060,235.32/12,776.52
6. Step 6: Final answer
   x = 11,745.00