Finding the Fourth Proportional to 10,271.21, 14,174.28 and 5,555.49

Step by Step Solution

1. Step 1: Write the proportion equation
   10,271.21 : 14,174.28 = 5,555.49 : x
2. Step 2: Convert to fraction form
   10,271.21/14,174.28 = 5,555.49/x
3. Step 3: Cross multiply
   10,271.21x = 14,174.28 × 5,555.49
4. Step 4: Simplify right side
   10,271.21x = 78,745,070.80
5. Step 5: Solve for x
   x = 78,745,070.80/10,271.21
6. Step 6: Final answer
   x = 7,666.59