Finding the Fourth Proportional to 12,690.52, 17,513.49 and 7,101.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,690.52 : 17,513.49 = 7,101.52 : x
2. Step 2: Convert to fraction form
   12,690.52/17,513.49 = 7,101.52/x
3. Step 3: Cross multiply
   12,690.52x = 17,513.49 × 7,101.52
4. Step 4: Simplify right side
   12,690.52x = 124,372,399.50
5. Step 5: Solve for x
   x = 124,372,399.50/12,690.52
6. Step 6: Final answer
   x = 9,800.42