Finding the Fourth Proportional to 9,818.79, 14,719.40 and 3,574.40

Step by Step Solution

1. Step 1: Write the proportion equation
   9,818.79 : 14,719.40 = 3,574.40 : x
2. Step 2: Convert to fraction form
   9,818.79/14,719.40 = 3,574.40/x
3. Step 3: Cross multiply
   9,818.79x = 14,719.40 × 3,574.40
4. Step 4: Simplify right side
   9,818.79x = 52,613,069.09
5. Step 5: Solve for x
   x = 52,613,069.09/9,818.79
6. Step 6: Final answer
   x = 5,358.41