Finding the Fourth Proportional to 10,270.81, 14,173.72 and 5,555.09

Step by Step Solution

1. Step 1: Write the proportion equation
   10,270.81 : 14,173.72 = 5,555.09 : x
2. Step 2: Convert to fraction form
   10,270.81/14,173.72 = 5,555.09/x
3. Step 3: Cross multiply
   10,270.81x = 14,173.72 × 5,555.09
4. Step 4: Simplify right side
   10,270.81x = 78,736,320.00
5. Step 5: Solve for x
   x = 78,736,320.00/10,270.81
6. Step 6: Final answer
   x = 7,666.03