Finding the Fourth Proportional to 9,871.42, 14,817.39 and 5,719.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,871.42 : 14,817.39 = 5,719.54 : x
2. Step 2: Convert to fraction form
   9,871.42/14,817.39 = 5,719.54/x
3. Step 3: Cross multiply
   9,871.42x = 14,817.39 × 5,719.54
4. Step 4: Simplify right side
   9,871.42x = 84,748,654.80
5. Step 5: Solve for x
   x = 84,748,654.80/9,871.42
6. Step 6: Final answer
   x = 8,585.25