Finding the Fourth Proportional to 11,620.64, 17,428.34 and 3,300.48

Step by Step Solution

1. Step 1: Write the proportion equation
   11,620.64 : 17,428.34 = 3,300.48 : x
2. Step 2: Convert to fraction form
   11,620.64/17,428.34 = 3,300.48/x
3. Step 3: Cross multiply
   11,620.64x = 17,428.34 × 3,300.48
4. Step 4: Simplify right side
   11,620.64x = 57,521,871.10
5. Step 5: Solve for x
   x = 57,521,871.10/11,620.64
6. Step 6: Final answer
   x = 4,949.98