Finding the Fourth Proportional to 12,528.00, 17,284.34 and 7,146.57

Step by Step Solution

1. Step 1: Write the proportion equation
   12,528.00 : 17,284.34 = 7,146.57 : x
2. Step 2: Convert to fraction form
   12,528.00/17,284.34 = 7,146.57/x
3. Step 3: Cross multiply
   12,528.00x = 17,284.34 × 7,146.57
4. Step 4: Simplify right side
   12,528.00x = 123,523,698.76
5. Step 5: Solve for x
   x = 123,523,698.76/12,528.00
6. Step 6: Final answer
   x = 9,859.81