Finding the Fourth Proportional to 11,320.56, 16,977.60 and 3,527.28

Step by Step Solution

1. Step 1: Write the proportion equation
   11,320.56 : 16,977.60 = 3,527.28 : x
2. Step 2: Convert to fraction form
   11,320.56/16,977.60 = 3,527.28/x
3. Step 3: Cross multiply
   11,320.56x = 16,977.60 × 3,527.28
4. Step 4: Simplify right side
   11,320.56x = 59,884,748.93
5. Step 5: Solve for x
   x = 59,884,748.93/11,320.56
6. Step 6: Final answer
   x = 5,289.91