Finding the Fourth Proportional to 11,013.60, 16,521.48 and 3,617.76

Step by Step Solution

1. Step 1: Write the proportion equation
   11,013.60 : 16,521.48 = 3,617.76 : x
2. Step 2: Convert to fraction form
   11,013.60/16,521.48 = 3,617.76/x
3. Step 3: Cross multiply
   11,013.60x = 16,521.48 × 3,617.76
4. Step 4: Simplify right side
   11,013.60x = 59,770,749.48
5. Step 5: Solve for x
   x = 59,770,749.48/11,013.60
6. Step 6: Final answer
   x = 5,426.99