Finding the Fourth Proportional to 12,320.56, 16,995.18 and 7,601.50

Step by Step Solution

1. Step 1: Write the proportion equation
   12,320.56 : 16,995.18 = 7,601.50 : x
2. Step 2: Convert to fraction form
   12,320.56/16,995.18 = 7,601.50/x
3. Step 3: Cross multiply
   12,320.56x = 16,995.18 × 7,601.50
4. Step 4: Simplify right side
   12,320.56x = 129,188,860.77
5. Step 5: Solve for x
   x = 129,188,860.77/12,320.56
6. Step 6: Final answer
   x = 10,485.63