Finding the Fourth Proportional to 10,269.91, 14,172.45 and 5,554.18

Step by Step Solution

1. Step 1: Write the proportion equation
   10,269.91 : 14,172.45 = 5,554.18 : x
2. Step 2: Convert to fraction form
   10,269.91/14,172.45 = 5,554.18/x
3. Step 3: Cross multiply
   10,269.91x = 14,172.45 × 5,554.18
4. Step 4: Simplify right side
   10,269.91x = 78,716,338.34
5. Step 5: Solve for x
   x = 78,716,338.34/10,269.91
6. Step 6: Final answer
   x = 7,664.75