Finding the Fourth Proportional to 11,618.34, 17,422.17 and 3,719.31

Step by Step Solution

1. Step 1: Write the proportion equation
   11,618.34 : 17,422.17 = 3,719.31 : x
2. Step 2: Convert to fraction form
   11,618.34/17,422.17 = 3,719.31/x
3. Step 3: Cross multiply
   11,618.34x = 17,422.17 × 3,719.31
4. Step 4: Simplify right side
   11,618.34x = 64,798,451.10
5. Step 5: Solve for x
   x = 64,798,451.10/11,618.34
6. Step 6: Final answer
   x = 5,577.26