Finding the Fourth Proportional to 11,026.24, 16,540.20 and 3,128.62

Step by Step Solution

1. Step 1: Write the proportion equation
   11,026.24 : 16,540.20 = 3,128.62 : x
2. Step 2: Convert to fraction form
   11,026.24/16,540.20 = 3,128.62/x
3. Step 3: Cross multiply
   11,026.24x = 16,540.20 × 3,128.62
4. Step 4: Simplify right side
   11,026.24x = 51,748,000.52
5. Step 5: Solve for x
   x = 51,748,000.52/11,026.24
6. Step 6: Final answer
   x = 4,693.17