Finding the Fourth Proportional to 10,823.56, 16,221.14 and 5,554.12

Step by Step Solution

1. Step 1: Write the proportion equation
   10,823.56 : 16,221.14 = 5,554.12 : x
2. Step 2: Convert to fraction form
   10,823.56/16,221.14 = 5,554.12/x
3. Step 3: Cross multiply
   10,823.56x = 16,221.14 × 5,554.12
4. Step 4: Simplify right side
   10,823.56x = 90,094,158.10
5. Step 5: Solve for x
   x = 90,094,158.10/10,823.56
6. Step 6: Final answer
   x = 8,323.89