Finding the Fourth Proportional to 12,692.77, 17,505.28 and 9,513.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,692.77 : 17,505.28 = 9,513.52 : x
2. Step 2: Convert to fraction form
   12,692.77/17,505.28 = 9,513.52/x
3. Step 3: Cross multiply
   12,692.77x = 17,505.28 × 9,513.52
4. Step 4: Simplify right side
   12,692.77x = 166,536,831.39
5. Step 5: Solve for x
   x = 166,536,831.39/12,692.77
6. Step 6: Final answer
   x = 13,120.61