Finding the Fourth Proportional to 12,485.28, 17,231.36 and 12,075.02

Step by Step Solution

1. Step 1: Write the proportion equation
   12,485.28 : 17,231.36 = 12,075.02 : x
2. Step 2: Convert to fraction form
   12,485.28/17,231.36 = 12,075.02/x
3. Step 3: Cross multiply
   12,485.28x = 17,231.36 × 12,075.02
4. Step 4: Simplify right side
   12,485.28x = 208,068,870.10
5. Step 5: Solve for x
   x = 208,068,870.10/12,485.28
6. Step 6: Final answer
   x = 16,665.13