Finding the Fourth Proportional to 10,269.92, 14,172.50 and 5,554.20

Step by Step Solution

1. Step 1: Write the proportion equation
   10,269.92 : 14,172.50 = 5,554.20 : x
2. Step 2: Convert to fraction form
   10,269.92/14,172.50 = 5,554.20/x
3. Step 3: Cross multiply
   10,269.92x = 14,172.50 × 5,554.20
4. Step 4: Simplify right side
   10,269.92x = 78,716,966.53
5. Step 5: Solve for x
   x = 78,716,966.53/10,269.92
6. Step 6: Final answer
   x = 7,664.81