Finding the Fourth Proportional to 11,520.78, 17,276.82 and 3,727.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,520.78 : 17,276.82 = 3,727.50 : x
2. Step 2: Convert to fraction form
   11,520.78/17,276.82 = 3,727.50/x
3. Step 3: Cross multiply
   11,520.78x = 17,276.82 × 3,727.50
4. Step 4: Simplify right side
   11,520.78x = 64,399,346.55
5. Step 5: Solve for x
   x = 64,399,346.55/11,520.78
6. Step 6: Final answer
   x = 5,589.84