Finding the Fourth Proportional to 11,320.02, 16,978.76 and 3,528.18

Step by Step Solution

1. Step 1: Write the proportion equation
   11,320.02 : 16,978.76 = 3,528.18 : x
2. Step 2: Convert to fraction form
   11,320.02/16,978.76 = 3,528.18/x
3. Step 3: Cross multiply
   11,320.02x = 16,978.76 × 3,528.18
4. Step 4: Simplify right side
   11,320.02x = 59,904,121.46
5. Step 5: Solve for x
   x = 59,904,121.46/11,320.02
6. Step 6: Final answer
   x = 5,291.87