Finding the Fourth Proportional to 10,354.96, 15,519.47 and 8,155.00

Step by Step Solution

1. Step 1: Write the proportion equation
   10,354.96 : 15,519.47 = 8,155.00 : x
2. Step 2: Convert to fraction form
   10,354.96/15,519.47 = 8,155.00/x
3. Step 3: Cross multiply
   10,354.96x = 15,519.47 × 8,155.00
4. Step 4: Simplify right side
   10,354.96x = 126,561,200.25
5. Step 5: Solve for x
   x = 126,561,200.25/10,354.96
6. Step 6: Final answer
   x = 12,222.28