Finding the Fourth Proportional to 12,087.12, 16,685.64 and 7,373.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,087.12 : 16,685.64 = 7,373.28 : x
2. Step 2: Convert to fraction form
   12,087.12/16,685.64 = 7,373.28/x
3. Step 3: Cross multiply
   12,087.12x = 16,685.64 × 7,373.28
4. Step 4: Simplify right side
   12,087.12x = 123,027,895.70
5. Step 5: Solve for x
   x = 123,027,895.70/12,087.12
6. Step 6: Final answer
   x = 10,178.43