Finding the Fourth Proportional to 11,618.70, 17,428.71 and 3,298.05

Step by Step Solution

1. Step 1: Write the proportion equation
   11,618.70 : 17,428.71 = 3,298.05 : x
2. Step 2: Convert to fraction form
   11,618.70/17,428.71 = 3,298.05/x
3. Step 3: Cross multiply
   11,618.70x = 17,428.71 × 3,298.05
4. Step 4: Simplify right side
   11,618.70x = 57,480,757.02
5. Step 5: Solve for x
   x = 57,480,757.02/11,618.70
6. Step 6: Final answer
   x = 4,947.26