Finding the Fourth Proportional to 10,270.23, 14,172.91 and 5,554.50

Step by Step Solution

1. Step 1: Write the proportion equation
   10,270.23 : 14,172.91 = 5,554.50 : x
2. Step 2: Convert to fraction form
   10,270.23/14,172.91 = 5,554.50/x
3. Step 3: Cross multiply
   10,270.23x = 14,172.91 × 5,554.50
4. Step 4: Simplify right side
   10,270.23x = 78,723,414.71
5. Step 5: Solve for x
   x = 78,723,414.71/10,270.23
6. Step 6: Final answer
   x = 7,665.20