Finding the Fourth Proportional to 12,253.86, 16,907.37 and 7,776

Step by Step Solution

1. Step 1: Write the proportion equation
   12,253.86 : 16,907.37 = 7,776 : x
2. Step 2: Convert to fraction form
   12,253.86/16,907.37 = 7,776/x
3. Step 3: Cross multiply
   12,253.86x = 16,907.37 × 7,776
4. Step 4: Simplify right side
   12,253.86x = 131,471,709.12
5. Step 5: Solve for x
   x = 131,471,709.12/12,253.86
6. Step 6: Final answer
   x = 10,729.00