Finding the Fourth Proportional to 9,872.42, 14,818.89 and 5,720.54

Step by Step Solution

1. Step 1: Write the proportion equation
   9,872.42 : 14,818.89 = 5,720.54 : x
2. Step 2: Convert to fraction form
   9,872.42/14,818.89 = 5,720.54/x
3. Step 3: Cross multiply
   9,872.42x = 14,818.89 × 5,720.54
4. Step 4: Simplify right side
   9,872.42x = 84,772,053.00
5. Step 5: Solve for x
   x = 84,772,053.00/9,872.42
6. Step 6: Final answer
   x = 8,586.76