Finding the Fourth Proportional to 10,707.56, 16,051.78 and 8,354.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,707.56 : 16,051.78 = 8,354.72 : x
2. Step 2: Convert to fraction form
   10,707.56/16,051.78 = 8,354.72/x
3. Step 3: Cross multiply
   10,707.56x = 16,051.78 × 8,354.72
4. Step 4: Simplify right side
   10,707.56x = 134,108,127.40
5. Step 5: Solve for x
   x = 134,108,127.40/10,707.56
6. Step 6: Final answer
   x = 12,524.62