Finding the Fourth Proportional to 12,089.12, 16,688.40 and 7,375.28

Step by Step Solution

1. Step 1: Write the proportion equation
   12,089.12 : 16,688.40 = 7,375.28 : x
2. Step 2: Convert to fraction form
   12,089.12/16,688.40 = 7,375.28/x
3. Step 3: Cross multiply
   12,089.12x = 16,688.40 × 7,375.28
4. Step 4: Simplify right side
   12,089.12x = 123,081,622.75
5. Step 5: Solve for x
   x = 123,081,622.75/12,089.12
6. Step 6: Final answer
   x = 10,181.19