Finding the Fourth Proportional to 11,753.60, 17,627.20 and 3,961.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,753.60 : 17,627.20 = 3,961.28 : x
2. Step 2: Convert to fraction form
   11,753.60/17,627.20 = 3,961.28/x
3. Step 3: Cross multiply
   11,753.60x = 17,627.20 × 3,961.28
4. Step 4: Simplify right side
   11,753.60x = 69,826,274.82
5. Step 5: Solve for x
   x = 69,826,274.82/11,753.60
6. Step 6: Final answer
   x = 5,940.84